APA (7th ed.) Citation

World Conference on National Parks, 2d, Yellowstone and Grand Teton National Parks, National Parks Centennial Commission, United States. National Park Service, International Union for Conservation of Nature and Natural Resources, & Elliott, H. F. I. (1974). Second World Conference on National Parks. Published for National Parks Centennial Commission by International Union for Conservation of Nature and Natural Resources.

Chicago Style (17th ed.) Citation

World Conference on National Parks, 2d, Yellowstone and Grand Teton National Parks, National Parks Centennial Commission, United States. National Park Service, International Union for Conservation of Nature and Natural Resources, and Hugh F. I. Elliott. Second World Conference on National Parks. Morges, Switzerland: Published for National Parks Centennial Commission by International Union for Conservation of Nature and Natural Resources, 1974.

MLA (8th ed.) Citation

World Conference on National Parks, 2d, Yellowstone and Grand Teton National Parks, et al. Second World Conference on National Parks. Published for National Parks Centennial Commission by International Union for Conservation of Nature and Natural Resources, 1974.