APA (7th ed.) Citation

ebrary, Inc. (1993). Protecting visibility in national parks and wilderness areas. National Academy Press.

Chicago Style (17th ed.) Citation

ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. Washington, D.C.: National Academy Press, 1993.

MLA (9th ed.) Citation

ebrary, Inc. Protecting Visibility in National Parks and Wilderness Areas. National Academy Press, 1993.