United States. National Park Service. (1917). General information regarding national monuments set aside under Act of Congress approved June 8, 1906. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. National Park Service. General Information Regarding National Monuments Set Aside Under Act of Congress Approved June 8, 1906. Washington: U.S. GPO, 1917.
MLA (9th ed.) CitationUnited States. National Park Service. General Information Regarding National Monuments Set Aside Under Act of Congress Approved June 8, 1906. U.S. GPO, 1917.
Warning: These citations may not always be 100% accurate.