APA (7th ed.) Citation

Behrens, D. W. (1980). Pacific Coast nudibranchs: A guide to the opisthobranchs of the Northeastern pacific. Sea Challengers.

Chicago Style (17th ed.) Citation

Behrens, David W. Pacific Coast Nudibranchs: A Guide to the Opisthobranchs of the Northeastern Pacific. Los Osos, Calif: Sea Challengers, 1980.

MLA (9th ed.) Citation

Behrens, David W. Pacific Coast Nudibranchs: A Guide to the Opisthobranchs of the Northeastern Pacific. Sea Challengers, 1980.