Instituto Brasileiro de Informação em Ciência e Tecnologia

Trích dẫn kiểu APA (xuất bản lần thứ 7)

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.

Trích dẫn kiểu Chicago (xuất bản lần thứ 7)

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.

Trích dẫn kiểu MLA (xuất bản lần thứ 8)

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.