APA (7th ed.) Citation

United States. Forest Service, United States. National Park Service, BC Parks, & Pacific Crest Trail Association. (2006). Pacific Crest National Scenic Trail: Cascade series, Northern Washington. USDA Forest Service, Regional Office.

Chicago Style (17th ed.) Citation

United States. Forest Service, United States. National Park Service, BC Parks, and Pacific Crest Trail Association. Pacific Crest National Scenic Trail: Cascade Series, Northern Washington. Portland, Ore: USDA Forest Service, Regional Office, 2006.

MLA (9th ed.) Citation

United States. Forest Service, et al. Pacific Crest National Scenic Trail: Cascade Series, Northern Washington. USDA Forest Service, Regional Office, 2006.