APA aipamena

(2001). Crop production in tropical Africa. Brussels: Directorate General for International Co-operation.

Chicago Style aipamena

Crop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.

MLA aipamena

Crop Production in Tropical Africa. Brussels: Directorate General for International Co-operation, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.