References

Anonymous, 2002. Master plan of erzurum agriculture. Ministry of Agriculture and Rural Affairs, Erzurum.

Gujarati, D.N., 1995. Basic Econometrics. 3rd Edn., McGraw Hill Inc., New York.

Rao, P.S.R.S., 2000. Sampling Methodologies with Applications. Chapman and Hall/CRC Press, Florida.

Studenmund, A.H., 2006. Using Econometrics: A Practical Guide. 5th Edn., Pearson Education Inc, New York, USA., ISBN-13: 9780321316493.

White, K.J., 1997. Shazam: The Econometrics Computer Program. Version 8.0, Irvin ImcGraw-Hill, Canada.