APA aipamena

FAO. (1993). FAO soils bulletin N.69: Soil tillage in Africa: needs and challenges. Rome: FAO.

Chicago Style aipamena

FAO. FAO Soils Bulletin N.69: Soil Tillage in Africa: Needs and Challenges. Rome: FAO, 1993.

MLA aipamena

FAO. FAO Soils Bulletin N.69: Soil Tillage in Africa: Needs and Challenges. Rome: FAO, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.