APA (7th ed.) Citation

United States. National Park Service. Denver Service Center. Professional Support Division. Concessions Branch. (1989). Preliminary transportation study: Cumberland Gap National Historical Park, Kentucky. U.S. Dept. of the Interior, National Park Service, Denver Service Center, Professional Support Division, Concessions Branch.

Chicago Style (17th ed.) Citation

United States. National Park Service. Denver Service Center. Professional Support Division. Concessions Branch. Preliminary Transportation Study: Cumberland Gap National Historical Park, Kentucky. [Denver, Colo.?]: U.S. Dept. of the Interior, National Park Service, Denver Service Center, Professional Support Division, Concessions Branch, 1989.

MLA (9th ed.) Citation

United States. National Park Service. Denver Service Center. Professional Support Division. Concessions Branch. Preliminary Transportation Study: Cumberland Gap National Historical Park, Kentucky. U.S. Dept. of the Interior, National Park Service, Denver Service Center, Professional Support Division, Concessions Branch, 1989.