एपीए उद्धरण

Kusky, T. (2006). The encyclopedia of earth science. Viva Books.

शिकागो स्टाइल उद्धरण

Kusky, Timothy. The Encyclopedia of Earth Science. New Delhi: Viva Books, 2006.

एमएलए उद्धरण

Kusky, Timothy. The Encyclopedia of Earth Science. Viva Books, 2006.