APA (7th ed.) Citation

United States. National Park Service. Office of Public Affairs & United States. National Park Service. Division of Publications. (1985). The National parks: Index 1985. U.S. Dept. of the Interior.

Chicago Style (17th ed.) Citation

United States. National Park Service. Office of Public Affairs and United States. National Park Service. Division of Publications. The National Parks: Index 1985. Washington, D.C: U.S. Dept. of the Interior, 1985.

MLA (9th ed.) Citation

United States. National Park Service. Office of Public Affairs and United States. National Park Service. Division of Publications. The National Parks: Index 1985. U.S. Dept. of the Interior, 1985.