1. Global Area under Cultivation and Output Of Maizehttp://faostat3.fao.org/ download/Q/QC/E
2. Staple food prices in Ugandahttp://purl.umn.edu/58553
3. Use of Improved Inputs and Its Effect on Maize Yield and Profit in Ugandahttp://www.ajol.info/index.php/ajfand/article/view/84204
4. 2012 Statistical Abstracthttp://www.ubos.org/onlinefiles/uploads/ubos/pdf%20documents/2012StatisticalAbstract.pdf
5. World Maize Facts and Trends 1997/98http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.944.6485&rep=rep1&type=pdf