1. Influence of farmer FFS approach on the acquisition of knowledge, skills for agricultural productivity in the Lake Victoria Region, Kenya;International Journal of Sciences: Basic and Applied Research,2014
2. Anderson, J.R. and Feder, G. (2007), “Agricultural extension”, in Evenson, R.E. and Pingali, P. (Eds), Handbook of Agricultural Economics, Vol. 3, Agricultural Development: Farmers, Farm Production, and Farm Markets, Elsevier, Amsterdam, pp. 2343-2378.
3. Antle, J.M. and Capalbo, S.M. (1988), “An introduction to recent developments in production theory and productivity measurement”, in Capalbo, S.M. and Antle, J.M. (Eds), Agricultural Productivity: Measurement and Explanation, Resource for the Future, Washington, DC, pp. 17-95.
4. The economic impact of agricultural extension: a review’;Economic Development and Cultural Change,1991