APA استشهاد

Kellert, S. R. E. (1997). Macmillan encyclopedia of the environment.

استشهاد بنمط شيكاغو

Kellert, Stephen R; Ed. Macmillan Encyclopedia of the Environment. New York, Simon & Schuster, 1997.

MLA استشهاد

Kellert, Stephen R; Ed. Macmillan Encyclopedia of the Environment. 1997.