एपीए उद्धरण

Strahler, A. N. S. (1978). Modern Physical Geography. John Wiley.

शिकागो स्टाइल उद्धरण

Strahler, Arthur N.and Strahler. Modern Physical Geography. New York: John Wiley, 1978.

एमएलए उद्धरण

Strahler, Arthur N.and Strahler. Modern Physical Geography. John Wiley, 1978.