Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.