Dyfyniad APA

FAO. (1991). World soil resources reports N.71.3: Agro-ecological land resources assessment for agricultural development planning. Rome: FAO.

Dyfyniad Arddull Chicago

FAO. World Soil Resources Reports N.71.3: Agro-ecological Land Resources Assessment for Agricultural Development Planning. Rome: FAO, 1991.

Dyfyniad MLA

FAO. World Soil Resources Reports N.71.3: Agro-ecological Land Resources Assessment for Agricultural Development Planning. Rome: FAO, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.