References

Green, A.G., 1979. Extracurricular Activities in Utah Rural Community Colleges. Brigham Young University, Provo, USA., Pages: 638.

Halverscheid, S., 2004. On motivational aspects of instructor-learner interactions in extra-curriculum activities. Psychol. Math. Educ., 3: 9-16.
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Jordan, M.W., 1978. A Comparative Study of the Attitudes of Black and White Undergraduate Students Toward Selected Segments of the Extracurriculum at the University of Iowa. University of Iowa, USA., Pages: 84.

Plucker, J.A. and V.B. Stocking, 2001. Looking outside and inside: Self-concept development of gifted adolescents. Exceptional Children, 67: 534-548.
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