एपीए उद्धरण

Schwoerbel, J. (1970). Methods of hydrobiology (freshwater biology). Oxford: Pergamon Press.

शिकागो स्टाइल उद्धरण

Schwoerbel, Jurgen. Methods of Hydrobiology (freshwater Biology). Oxford: Pergamon Press, 1970.

एमएलए उद्धरण

Schwoerbel, Jurgen. Methods of Hydrobiology (freshwater Biology). Oxford: Pergamon Press, 1970.