United States. National Park Service. (1917). Regulations governing Platt National Park, in effect May 1, 1917. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. National Park Service. Regulations Governing Platt National Park, in Effect May 1, 1917. Washington: U.S. GPO, 1917.
MLA (9th ed.) CitationUnited States. National Park Service. Regulations Governing Platt National Park, in Effect May 1, 1917. U.S. GPO, 1917.
Warning: These citations may not always be 100% accurate.