APA aipamena

FAO. (2006). Fertilizer use by crop. Rome, Italy: FAO.

Chicago Style aipamena

FAO. Fertilizer Use By Crop. Rome, Italy: FAO, 2006.

MLA aipamena

FAO. Fertilizer Use By Crop. Rome, Italy: FAO, 2006.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.