एपीए उद्धरण

Gates, A. E. (2004). encyclopedia of notable scientists: Earth scientists A to Z. Viva Books.

शिकागो स्टाइल उद्धरण

Gates, Alexander E. Encyclopedia of Notable Scientists: Earth Scientists A to Z. New Delhi: Viva Books, 2004.

एमएलए उद्धरण

Gates, Alexander E. Encyclopedia of Notable Scientists: Earth Scientists A to Z. Viva Books, 2004.