1. Akyeampong, E., Duguma, B., Heineman, A. M., Kamara, C. S., Kiepe, P., Kwesiga, F., Ong., C. K., Otieno, H. J. and Rao, M. R. A Synthesis of ICRAF's Research on Alley Farming. Alley Farming Research and Development: Proceedings of the International Conference on Alley Farming. Edited by: Kang, B. T., Osiname, A. O. and Larbi, A. pp.40–51. Ibadan, Nigeria: IITA.
2. Alley Farming with Leucaena: Effect of Short Grazed Fallows on Soil Fertility and Crop Yields
3. Centro Agronomico Tropical de Investigacio Enzenanza (CATIE) Costa Rica. 1996. (http://www.catie.ac.cr)