wa Gathui, T.; Kamau, S.; Mugo, F.; Ngugi, W.; Wanjiru, H. The Kenya Charcaol Policy Handbook: Current Regulations for a Sustainable Charcoal Sector. Practical Action Consulting East Africa, (2011) 32 pp
International Institute of Tropical Agriculture, 'IITA 2014 Financial Statements', International Institute of Tropical Agriculture, Ibadan, Nigeria, 2016