एपीए उद्धरण

Krebs, C. (1994). Ecology: : the experimental analysis of distribution and abundance (4th ed.). Harper Collins.

शिकागो स्टाइल उद्धरण

Krebs, Charles. Ecology: : The Experimental Analysis of Distribution and Abundance. 4th ed. California: Harper Collins, 1994.

एमएलए उद्धरण

Krebs, Charles. Ecology: : The Experimental Analysis of Distribution and Abundance. 4th ed. Harper Collins, 1994.