APA (7th ed.) Citation

National Park Foundation. (1988). The Complete guide to America's national parks: The official visitor's guide of the National Park Foundation : comprehensive information on all 375 of America's national park areas (1988-1989 ed.). The Foundation.

Chicago Style (17th ed.) Citation

National Park Foundation. The Complete Guide to America's National Parks: The Official Visitor's Guide of the National Park Foundation : Comprehensive Information on All 375 of America's National Park Areas. 1988-1989 ed. [Washington, D.C.]: The Foundation, 1988.

MLA (9th ed.) Citation

National Park Foundation. The Complete Guide to America's National Parks: The Official Visitor's Guide of the National Park Foundation : Comprehensive Information on All 375 of America's National Park Areas. 1988-1989 ed. The Foundation, 1988.