Style de citation APA (7e éd.)
ebrary, Inc. (1993). Protecting visibility in national parks and wilderness areas. National Academy Press.
Style de citation Chicago (17e éd.)
ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. Washington, D.C.: National Academy Press, 1993.
Style de citation MLA (9e éd.)
ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. National Academy Press, 1993.
Attention : ces citations peuvent ne pas être correctes à 100%.