APA (7th ed.) Citation

Pyle, R. M. (2002). The butterflies of Cascadia: A field guide to all the species of Washington, Oregon, and surrounding territories. Seattle Audubon Society.

Chicago Style (17th ed.) Citation

Pyle, Robert Michael. The Butterflies of Cascadia: A Field Guide to All the Species of Washington, Oregon, and Surrounding Territories. [Seattle]: Seattle Audubon Society, 2002.

MLA (8th ed.) Citation

Pyle, Robert Michael. The Butterflies of Cascadia: A Field Guide to All the Species of Washington, Oregon, and Surrounding Territories. Seattle Audubon Society, 2002.

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