APA (7th ed.) Citation

Leonard, W. P. (1993). Amphibians of Washington and Oregon. Seattle Audubon Society.

Chicago Style (17th ed.) Citation

Leonard, W. P. Amphibians of Washington and Oregon. Seattle, Wash.: Seattle Audubon Society, 1993.

MLA (8th ed.) Citation

Leonard, W. P. Amphibians of Washington and Oregon. Seattle Audubon Society, 1993.

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