APA (7th ed.) Citation

Tilberg, F. (1956). Fort Necessity National Battlefield Site, Pennsylvania (Rev. ed.). U.S. Dept. of the Interior, National Park Service.

Chicago Style (17th ed.) Citation

Tilberg, Frederick. Fort Necessity National Battlefield Site, Pennsylvania. Rev. ed. Washington, D.C.: U.S. Dept. of the Interior, National Park Service, 1956.

MLA (9th ed.) Citation

Tilberg, Frederick. Fort Necessity National Battlefield Site, Pennsylvania. Rev. ed. U.S. Dept. of the Interior, National Park Service, 1956.