APA (7th ed.) Citation

Britannica, E. (2008). Britannica Illustrated Science Library: Invertebrates. Encyclopaedia Britannica Inc.

Chicago Style (17th ed.) Citation

Britannica, Encyclopaedia. Britannica Illustrated Science Library: Invertebrates. Encyclopaedia Britannica Inc, 2008.

MLA (8th ed.) Citation

Britannica, Encyclopaedia. Britannica Illustrated Science Library: Invertebrates. Encyclopaedia Britannica Inc, 2008.

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