Davis, J. L. (2009). The Northwest nature guide: Where to go and what to see month by month in Oregon, Washington, and British Columbia. Timber Press.
Style de citation Chicago (17e éd.)Davis, James L. The Northwest Nature Guide: Where to Go and What to See Month by Month in Oregon, Washington, and British Columbia. Portland, Or.: Timber Press, 2009.
Style de citation MLA (8e éd.)Davis, James L. The Northwest Nature Guide: Where to Go and What to See Month by Month in Oregon, Washington, and British Columbia. Timber Press, 2009.
Attention : ces citations peuvent ne pas être correctes à 100%.