Wassink, J. L. (1995). Birds of the Pacific Northwest mountains: The Cascade Range, the Olympic Mountains, Vancouver Island, and the Coast Mountains. Mountain Press Pub. Co..
Style de citation Chicago (17e éd.)Wassink, Jan L. Birds of the Pacific Northwest Mountains: The Cascade Range, the Olympic Mountains, Vancouver Island, and the Coast Mountains. Missoula, Mont.: Mountain Press Pub. Co., 1995.
Style de citation MLA (8e éd.)Wassink, Jan L. Birds of the Pacific Northwest Mountains: The Cascade Range, the Olympic Mountains, Vancouver Island, and the Coast Mountains. Mountain Press Pub. Co., 1995.
Attention : ces citations peuvent ne pas être correctes à 100%.