APA aipamena

FAO. (2002). Major soils of the world. Rome: Food and Agriculture Organization of the United Nations.

Chicago Style aipamena

FAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.

MLA aipamena

FAO. Major Soils of the World. Rome: Food and Agriculture Organization of the United Nations, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.