APA (7th ed.) Citation

National Geographic Maps (Firm), National Geographic Center for Sustainable Destinations, National Geographic Society (U.S.), & Barry, C. (2005). Appalachia geotourism mapguide. National Geographic Society.

Chicago Style (17th ed.) Citation

National Geographic Maps (Firm), National Geographic Center for Sustainable Destinations, National Geographic Society (U.S.), and Cynthia Barry. Appalachia Geotourism Mapguide. Washington, D.C.: National Geographic Society, 2005.

MLA (9th ed.) Citation

National Geographic Maps (Firm), et al. Appalachia Geotourism Mapguide. National Geographic Society, 2005.