APA (7th ed.) Citation

Harpers Ferry Center (U.S.), United States. National Park Service. Office of Public Affairs, & United States. National Park Service. Division of Publications. (1985). The national parks, index. The Office and the Division.

Chicago Style (17th ed.) Citation

Harpers Ferry Center (U.S.), United States. National Park Service. Office of Public Affairs, and United States. National Park Service. Division of Publications. The National Parks, Index. Washington, D.C.: The Office and the Division, 1985.

MLA (9th ed.) Citation

Harpers Ferry Center (U.S.), et al. The National Parks, Index. The Office and the Division, 1985.