APA citiranje

Grzimek, B. (1976). Grzimek's encyclopedia of ecology.

Chicago Edition Citation

Grzimek, Bernhard. Grzimek's Encyclopedia of Ecology. Van Nostrand Reinhold Co., New York, 1976.

MLA citiranje

Grzimek, Bernhard. Grzimek's Encyclopedia of Ecology. 1976.