World Conference on National Parks. 1st Seattle, 1962. (1962). First world conference on national parks; proceeding. National Park Service, U.S. Department of the Interior.
Style de citation Chicago (17e éd.)World Conference on National Parks. 1st Seattle, 1962. First World Conference on National Parks; Proceeding. Washington: National Park Service, U.S. Department of the Interior, 1962.
Style de citation MLA (9e éd.)World Conference on National Parks. 1st Seattle, 1962. First World Conference on National Parks; Proceeding. National Park Service, U.S. Department of the Interior, 1962.
Attention : ces citations peuvent ne pas être correctes à 100%.