एपीए उद्धरण

De Blij, H. J. (1997). Geography: Realms, regions, and concepts. New York: J. Wiley.

शिकागो स्टाइल उद्धरण

De Blij, Harm J. Geography: Realms, Regions, and Concepts. New York: J. Wiley, 1997.

एमएलए उद्धरण

De Blij, Harm J. Geography: Realms, Regions, and Concepts. New York: J. Wiley, 1997.