References

Adoga, I. and R. Valverde, 2014. An RFID based supply chain inventory management solution for the petroleum development industry: A case study for SHELL Nigeria. J. Theor. Appl. Inf. Technol., 62: 199-203.
Direct Link  |  

Anonymous, 2010. A brief on NOCZIM operations to the minister of energy and power development. National Oil Company of Zimbabwe, Harare, Zimbabwe.

Anonymous, 2010. Indigenisation and economic empowerment. Ministry of Youth Development, Indigenisation and Empowerment, Harare, Zimbabwe.

Anonymous, 2012. Energy policy. Government Printers, Harare, Zimbabwe.

Anonymous, 2012. Industrial development policy 2012-2016. Ministry of Industry and Commerce, Government Printers, Harare, Zimbabwe.

Anonymous, 2015. By-laws of the council of supply chain management professionals. Council of Supply Chain Management Professionals (CSCMP), Chicago, Illinois.

Anonymous, 2017. National budget statement for 2018. Ministry of Finance and Economic Development, Government Printers, Harare, Zimbabwe.

Arora, A., A.S. Arora and K. Sivakumar, 2016. Relationships among supply chain strategies, organizational performance and technological and market turbulences. Intl. J. Logist. Manage., 27: 206-232.
CrossRef  |  Direct Link  |  

Arvis, J.F., J.F. Marteau and G. Raballand, 2010. The Cost of Being Land Locked-Logistics Costs and Supply Chain Reliability. World Bank, Washington, USA., ISBN-13:978-0-8213-8408-4, Pages: 95.

Azfar, K.R.W., N. Khan and H.F. Gabriel, 2014. Performance measurement: A conceptual framework for supply chain practices. Procedia Soc. Behav. Sci., 150: 803-812.
CrossRef  |  Direct Link  |  

Babatunde, B.O., R.A. Gbadeyan and J.A. Bamiduro, 2016. Supply chain management practices and market performance: Evidence from selected major marketers of petroleum products in Nigeria. Pac. J. Sci. Technol., 17: 129-139.
Direct Link  |  

Badenhorst-Weiss, J.A., E.H.V. Biljon and I.M. Ambe, 2017. Supply Chain Management: A Balanced Approach. 2nd Edn., Van Schaik, Pretoria, South Africa, ISBN:9781305888692, Pages: 672.

Bala, K., 2014. Supply chain management: Some issues and challenges; A review. Intl. J. Curr. Eng. Technol., 4: 947-953.
Direct Link  |  

Balfaqih, H., Z.M. Nopiah and N. Saibani, 2016. A conceptual framework for supply chain performance in desalination industry. Intl. J. Ind. Eng. Manage., 7: 95-101.
Direct Link  |  

Bazeley, P., 2015. Mixed methods in management research: Implications for the field. Electron. J. Bus. Res. Methods, 13: 27-35.
Direct Link  |  

Bimha, H.L., 2001. A study on customers’ perceptions in view of the quality of service they get from National Social Security Authority (NSSA): A total quality management approach. MBA Thesis, University of Zimbabwe, Harare, Zimbabwe.

Braziotis, C., M. Bourlakis, H. Rogers and J. Tannock, 2013. Supply chains and supply networks: Distinctions and overlaps. Supply Chain Manage. Int. J., 18: 644-652.
Direct Link  |  

Bryman, A., E. Bell, D.T. Jacques and H. Philip, 2014. Research Methodology: Business and Management Contexts. Oxford University Press, Cape Town, Southern Africa, ISBN:9780199076130, Pages: 416.

Cameron, R.A., D. Trudy, R. Scott, A. Ezaz and S. Aswini, 2013. Lessons from the field: Applying the Good Reporting of a Mixed Methods Study (GRAMMS) framework. Electron. J. Bus. Res. Methods, 11: 58-59.
Direct Link  |  

Chima, C.M., 2010. Supply chain management issues in the oil and gas industry. J. Bus. Econ. Res., 5: 27-36.
Direct Link  |  

Collins, J.M. and M.L. Troilo, 2015. National factor effects on firm competitiveness and innovation. Competitiveness Rev., 25: 392-409.
Direct Link  |  

Creswell, J.W., 2014. Research Design: Qualitative, Quantitative and Mixed Methods Approaches. 4th Edn., Sage Publications, Thousand Oaks, California, ISBN:978-1-4522-2610-1, Pages: 265.

Ettlie, J.E., 2014. Managing Innovation: New Technology, New Products and New Services in a Global Economy. 2nd Edn., Routledge, New York, USA.,.

Evans, J.R. and W.M. Lindsay, 2017. Managing for Quality and Performance Excellence. 10th Edn., Cengage Learning, Boston, Massachusetts, ISBN:978-1-305-66254-4, Pages: 665.

Farquhar, M.C., G. Ewing and S. Booth, 2011. Using mixed methods to develop and evaluate complex interventions in palliative care research. Palliative Med., 25: 748-757.
CrossRef  |  PubMed  |  Direct Link  |  

Fawcett, S.E., G.M. Magnan and M.M.W. Carter, 2008. Benefits, barriers and bridges to effective supply chain management. Supply Chain Manage. Int. J., 13: 35-48.
Direct Link  |  

Gichuru, M., M. Iravo and W. Arani, 2015. Collaborative supply chain practices on performance of food and beverages companies: A case study of Del Monte Kenya Ltd. Intl. J. Acad. Res. Bus. Soc. Sci., 5: 17-31.
CrossRef  |  Direct Link  |  

Havenga, J.H. and A. De-Bod, 2016. Customer Service: Business Logistics Management. 5th Edn., Oxford University Press, Cape Town, South Africa,.

Horn, G., H. Badenhorst-Weiss, G. Cook, S. Heckroodt and J. Howell et al., 2014. Supply Chain Management: A Logistics Approach. Oxford University Press, Cape Town, South Africa,.

Hugo, W.M.J. and J.A. Badenhorst-Weiss, 2016. Purchasing and Supply Chain Management. 10th Edn., Van Schaik, Pretoria, South Africa,.

Kimani, C.W., 2013. Supply chain management challenges in Kenya petroleum industry: Case of national oil corporation of Kenya. Intl. J. Soc. Sci. Entrepreneurship, 1: 231-246.
Direct Link  |  

Kruger, D., R. Ramphal and M. Maritz, 2013. Operations Management. 3rd Edn., Oxford University Press, Cape Town, South Africa,.

Kuiken, J., 2014. Caught in transition: Britain's oil policy in the face of impending crisis, 1967-1973. Historical Soc. Res., 39: 272-290.
CrossRef  |  Direct Link  |  

Leyh, C. and J. Thomschke, 2015. Critical success factors for implementing supply chain management systems-the perspective of selected German enterprises. Proceeding of the 2015 Federated Conference on Computer Science and Information Systems, September 13-16, 2015, IEEE, Berlin, Germany, ISBN: 978-8-3608-1065-1, pp: 1403-1413.

Lind, D.A., W.G. Marshal and S.A. Wathen, 2012. Basic Statistics for Business and Economics. 8th Edn., McGraw-Hill, New York, USA., ISBN:9780073521473, Pages: 1248.

Livohi, S.J., 2012. Downstream supply chain performance measurement by the oil marketing companies in Kenya. Master Thesis, University of Nairobi, Nairobi, Kenya.

Loedolff, J., 2014. Supply Chain Management: A Logistics Approach. Oxford University Press, Cape Town, South Africa,.

Maree, K., 2016. First Steps in Research. 2nd Edn., Van Schaik, Pretoria, ISBN:9780627033698, Pages: 424.

McHugh, M.L., 2013. The Chi-square test of independence. Biochemia Med., 23: 143-149.
Direct Link  |  

Ngulube, P. and B. Ngulube, 2015. Mixed methods research: An investigation of trends in the literature. S. Afr. J. Econ. Manage. Sci., 18: 1-13.
CrossRef  |  Direct Link  |  

Ng’anga, J., 2017. Petroleum products suppliers condemned as selfish. Kenya News Agency, Nairobi, Kenya. http://kenyanewsagency.go.ke/en/?p=100937.

Oakland, J.S., 2014. Total Quality Management and Operational Excellence: Text with Cases. 4th Edn., Routledge, New York, USA., ISBN:978-0-415-63550-9, Pages: 521.

Ogunlela, G.O. and L.M. Lekhanya, 2016. The use of integrated supply chain management model for promoting competitiveness in the Fast Moving Consumer Goods (FMCG) manufacturing industry in Nigeria. Probl. Perspect. Manage., 14: 160-167.
CrossRef  |  Direct Link  |  

Osoro, A., 2015. Factors affecting performance of supply chain systems in the petroleum industries in Kenya. Intl. J. Sci. Res. Publ., 5: 2250-3153.
Direct Link  |  

Pienaar, W.J. and J.J. Vogt, 2016. Business Logistics Management: A Value Chain Perspective. 4th Edn., Oxford University Press, Cape Town, South Africa,.

Rajaguru, R. and M.J. Matanda, 2013. Effects of inter-organizational compatibility on supply chain capabilities: Exploring the mediating role of Inter-Organizational Information Systems (IOIS) integration. Ind. Marketing Manage., 42: 620-632.
CrossRef  |  Direct Link  |  

Sohel, R.S.M., A. Osman, A.H. Abdul-Manaf, M.S. Abdul-Halim and M. Solaiman, 2016. Drivers of retail supply chain efficiency: Moderating effect of lean strategy. Intl. J. Supply Chain Manage., 5: 52-62.
Direct Link  |  

Stevenson, W.J., 2012. Operations Management: Theory and Practice. 11th Edn., McGraw-Hill, New York, USA., ISBN:9780077133016, Pages: 908.

Sweeney, E., D.B. Grant and D.J. Mangan, 2015. The implementation of supply chain management theory in practice: An empirical investigation. Supply Chain Manage. Intl. J., 20: 56-70.
CrossRef  |  Direct Link  |  

Talavera, M.G.V., 2015. Supply chain management practices and challenges: Case studies of four supply chains. Philippine Manage. Rev., 22: 53-57.
Direct Link  |  

Tanco, M., D. Jurburg and M. Escuder, 2015. Main difficulties hindering supply chain performance: An exploratory analysis at Uruguayan SMEs. Supply Chain Manage. Intl. J., 20: 11-23.
CrossRef  |  Direct Link  |  

Tay, M.Y., A.A. Rahman, Y.A. Aziz and S. Sidek, 2015. A review on drivers and barriers towards sustainable supply chain practices. Intl. J. Soc. Sci. Hum., 5: 892-897.
Direct Link  |  

Teddlie, C. and A. Tashakkori, 2012. Common core characteristics of mixed methods research: A review of critical issues and call for greater convergence. Am. Behav. Sci., 56: 774-788.
CrossRef  |  Direct Link  |  

Teravaninthorn, S. and G. Raballand, 2008. Transport Prices and Costs in Africa. World Bank, Washington, USA.,.

Terrell, S.R., 2012. Mixed-methods research methodologies. Qual. Rep., 17: 254-280.
Direct Link  |  

Trkman, P., M. Budler and A. Groznik, 2015. A business model approach to supply chain management. Supply Chain Manage. Intl. J., 20: 587-602.
Direct Link  |  

Wegner, T., 2012. Applied Business Statistics: Methods and Excel Based Applications. 3rd Edn., Juta Academic, Cape Town, South Africa, ISBN:9780702177743, Pages: 420.

Yunus, E.N. and S.K. Tadisina, 2016. Drivers of supply chain integration and the role of organizational culture: Empirical evidence from Indonesia. Bus. Process Manage. J., 22: 89-115.
CrossRef  |  Direct Link  |  

Zhang, X., D.P.V. Donk and T.V.D. Vaart, 2016. The different impact of inter-organizational and intra-organizational ICT on supply chain performance. Intl. J. Oper. Prod. Manage., 36: 803-824.
CrossRef  |  Direct Link  |