International Union for Conservation of Nature and Natural Resources, National Park Service\nOrganization of American States\nEastern National Park and Monument Association. (1976). Parks. U.S. National Park Service.
Chicago-Zitierstil (17. Ausg.)International Union for Conservation of Nature and Natural Resources, National Park Service\nOrganization of American States\nEastern National Park and Monument Association. Parks. Washington: U.S. National Park Service, 1976.
MLA-Zitierstil (8. Ausg.)International Union for Conservation of Nature and Natural Resources, National Park Service\nOrganization of American States\nEastern National Park and Monument Association. Parks. U.S. National Park Service, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.