White, M. (2009). Complete national parks of the United States: Featuring 400+ parks, monuments, battlefields, historic sites, scenic trails, recreation areas, and seashores. National Geographic.
Chicago-Zitierstil (17. Ausg.)White, Mel. Complete National Parks of the United States: Featuring 400+ Parks, Monuments, Battlefields, Historic Sites, Scenic Trails, Recreation Areas, and Seashores. Washington, D.C: National Geographic, 2009.
MLA-Zitierstil (9. Ausg.)White, Mel. Complete National Parks of the United States: Featuring 400+ Parks, Monuments, Battlefields, Historic Sites, Scenic Trails, Recreation Areas, and Seashores. National Geographic, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.