Dyfyniad APA

FAO. (1984). Illustrated encyclopedia of earth's resources. Exter Books.

Dyfyniad Arddull Chicago

FAO. Illustrated Encyclopedia of Earth's Resources. New York: Exter Books, 1984.

Dyfyniad MLA

FAO. Illustrated Encyclopedia of Earth's Resources. Exter Books, 1984.

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