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.
Chicago Style (17th ed.) CitationDavis, 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.
MLA引文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.
警告：這些引文格式不一定是100％准確.