APA Citation

National Park Foundation, & Moker, M. (2009). The official guide to America's National Parks (13. edition.). New York: Fodor's travel.

Chicago Style Citation

National Park Foundation, and Molly Moker. The Official Guide to America's National Parks. 13. edition. New York: Fodor's travel, 2009.

MLA Citation

National Park Foundation, and Molly Moker. The Official Guide to America's National Parks. 13. edition. New York: Fodor's travel, 2009.

Warning: These citations may not always be 100% accurate.