एपीए उद्धरण

Charles J. Krebs. (2001). Ecology: The experimental analysis of distribution and abundance. San Francisco: Benjamin Cummings.

शिकागो स्टाइल उद्धरण

Charles J. Krebs. Ecology: The Experimental Analysis of Distribution and Abundance. San Francisco: Benjamin Cummings, 2001.

एमएलए उद्धरण

Charles J. Krebs. Ecology: The Experimental Analysis of Distribution and Abundance. San Francisco: Benjamin Cummings, 2001.