एपीए उद्धरण

Chapra, S. C. (1997). Surface water-quality modeling. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Chapra, Steven C. Surface Water-quality Modeling. New York: McGraw-Hill, 1997.

एमएलए उद्धरण

Chapra, Steven C. Surface Water-quality Modeling. New York: McGraw-Hill, 1997.