APA (7th ed.) Citation

United States. National Park Service. (1997). National Park Service strategic plan 1997. [U.S. Dept. of the Interior, National Park Service].

Chicago Style (17th ed.) Citation

United States. National Park Service. National Park Service Strategic Plan 1997. [Washington, D.C.]: [U.S. Dept. of the Interior, National Park Service], 1997.

MLA (9th ed.) Citation

United States. National Park Service. National Park Service Strategic Plan 1997. [U.S. Dept. of the Interior, National Park Service], 1997.