FAO. (1996). FAO soils bulletin N.73: Agro-ecological zoning: Guidelines. Rome: FAO.
Trích dẫn kiểu ChicagoFAO. FAO Soils Bulletin N.73: Agro-ecological Zoning: Guidelines. Rome: FAO, 1996.
MLA citiranjeFAO. FAO Soils Bulletin N.73: Agro-ecological Zoning: Guidelines. Rome: FAO, 1996.
Opozorilo: Ti citati niso vedno 100% točni.