Brown, D., Schreckenberg, K., Bird, N., Cerutti,P., Gatto, F.D., Diaw, C., Fomété, T., Luttrell, C., Navarro, G., Oberndorf, R., Thiel, H., Wells, A. 2009. Bois légal: vérification et gouvernance dans le secteur forestier . Bogor, Indonesia, Center for International Forestry Research (CIFOR). 384p ISBN: 978-602-8693-11-0..
Consultative Group on International Agricultural Research (CGIAR), 'Maize Agri-Food System CGIAR Research Program: Annual Report 2016', CGIAR Research Program on Maize, 2019
Otto, A., TRL (2018). Development of Guidelines and Specifications for Low Volume Sealed Roads through Back Analysis, Phase 2 Report. London: ReCAP for DFID
CTA. 1996. The role of information for rural development in ACP-countries: reviews and perspectives. Proceedings of an international seminar, Montpellier, France, 12-16 June 1995.. CTA, Wageningen, The Netherlands
Nwanze, K F and Kearl, S and Sadhana, V (1989) International Workshop on Sorghum Stem Borers 17-20 Nov 1987. Other. International Crops Research Institute for the Semi-Arid Tropics
Janboonme, S and Tippayaruk, J and Dhummarangsi, P and Bantilan, M C S (2001) Impact of pigeonpea research in enhancing sugarcane production in Thailand:Socioeconomic Policy Program. Working Paper Series no.9. Working Paper. International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India
Warren, G.P (1998) Maintenance of soil fertility and organic matter. Final Technical Report for project R5163. Reading: Department of Soil Science, University of Reading, UK. 85 pp
Gutiérrez, J. M.; Benavidez, S.; Valdivia, R. R. 2015. Producción Protegida en Hortalizas. Implementación de sistemas de agricultura protegida en tomate, chiltomo y chiles de colores. Catholic Relief Services (CRS), Managua, Ni. p. 18. (La historia detrás de los números 4)