Tilberg, F. (1962). Gettysburg National Military Park, Pennsylvania (Revised 1962.). United States Department of the Interior, National Park Service.
Chicago Style (17th ed.) CitationTilberg, Frederick. Gettysburg National Military Park, Pennsylvania. Revised 1962. Washington, D.C.: United States Department of the Interior, National Park Service, 1962.
MLA (9th ed.) CitationTilberg, Frederick. Gettysburg National Military Park, Pennsylvania. Revised 1962. United States Department of the Interior, National Park Service, 1962.
Warning: These citations may not always be 100% accurate.