1. Agboola, A.A. and H. A. Tijani-Eniola. 1991. Sustainability of Maize production through appropriate farming systems and Practices. Proceeding of Conference of Maize Association of Nigeria IITA Ibadan.
2. Aigner, D. I. C., A. K. Lovell and P. Schmidt, 1977. “Formation and Estimation of Stochastic frontier production function Models.” Journal and Econometrics 6: 21–37
3. Akande, S. O. 1994. Comparative Cost and Return in Maize Production in Nigeria.NISER individual Research Project Report, Ibadan: NISER.
4. Chambers, R. G. 1983. Applied Production Analysis: A Dual Approach. Cambridge: Cambridge University Press.
5. Coelli, T .J. 1996. “A Guide to Frontier version 4.1c: A computer Programme for Stochastic Frontier production and Cost Function Estimation. Mines, Dept. of Econometrics, Armidele, Australia: University of New England.