APA (7th ed.) Citation

United States. National Park Service. (1932). Circular of general information regarding Yellowstone National Park, Wyo. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. National Park Service. Circular of General Information Regarding Yellowstone National Park, Wyo. Washington: U.S. GPO, 1932.

MLA (9th ed.) Citation

United States. National Park Service. Circular of General Information Regarding Yellowstone National Park, Wyo. U.S. GPO, 1932.

Warning: These citations may not always be 100% accurate.