APA (7th ed.) Citation

(2011). Britanica Illustrated Science Library: Ecology. Encyclopaedia Britannica Inc.

Chicago Style (17th ed.) Citation

Britanica Illustrated Science Library: Ecology. Chicago: Encyclopaedia Britannica Inc, 2011.

MLA (9th ed.) Citation

Britanica Illustrated Science Library: Ecology. Encyclopaedia Britannica Inc, 2011.

Warning: These citations may not always be 100% accurate.