एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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