(2001). Crop production in tropical Africa. Brussels: Directorate General for International Co-operation.
Chicago Style aipamenaCrop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.
MLA aipamenaCrop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.