CTA. 2002. L’agriculture biologique, un concept nouveau en Afrique, encore entravé par de nombreuses contraintes.. Programme de radio rurale 02/4. CTA, Wageningen, The Netherlands.
Francis, J., Mytelka, L., Huis, A. van and Röling, N. (Eds.). 2016. Innovation systems: Towards effective strategies in support of smallholder farmers. Wageningen, The Netherlands: Technical Centre for Agricultural and Rural Cooperation and Wageningen University and Research Centre.
Huggins-Rao, Sheila; Leclair, Mark, 'Dialoguer avec la radio', ICT Update, vol. 49, Technical Centre for Agricultural and Rural Cooperation, Wageningen, 2009