एपीए उद्धरण

Bill Friman. (1993). Environmental ecology: The ecological effects of pollution, disturbance, and other stresses. San Diego, California: Academic.

शिकागो स्टाइल उद्धरण

Bill Friman. Environmental Ecology: The Ecological Effects of Pollution, Disturbance, and Other Stresses. San Diego, California: Academic, 1993.

एमएलए उद्धरण

Bill Friman. Environmental Ecology: The Ecological Effects of Pollution, Disturbance, and Other Stresses. San Diego, California: Academic, 1993.