1. Adubi, A. A. 1992. “An empirical analysis of production risks and attitudes of small farmers in Oyo State, Nigeria.” PhD thesis, University of Ibadan, Nigeria.
2. Amaza, P. S., J. K. Olayemi, A. O. Adejobi, Y. Bila, and A. Iheanacho. 2007. Baseline Socioeconomic Survey Report: Agriculture in Borno State, Nigeria, 84. Ibadan, Nigeria: IITA.
3. Bandabla, T. 2005. “Comparative study of statistical distribution and efficiency of some poverty estimators in Ibadan northeast Local Government Area, Oyo State, Nigeria.” M.Sc. Thesis, Department of Mathematical Sciences, College of Natural Sciences, University of Agriculture, Abeokuta, 91.