एपीए उद्धरण

Hickman, G. C., & Hickman, S. M. (2002). The ecology action guide. San Francisco: Benjamin Cummings.

शिकागो स्टाइल उद्धरण

Hickman, Graham C., और Susan M. Hickman. The Ecology Action Guide. San Francisco: Benjamin Cummings, 2002.

एमएलए उद्धरण

Hickman, Graham C., और Susan M. Hickman. The Ecology Action Guide. San Francisco: Benjamin Cummings, 2002.