APA (7th ed.) Citation

Yellowstone National Park (Agency : U.S.) & United States. National Park Service. (1928). Circular of general information regarding Yellowstone National Park, Wyoming. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Yellowstone National Park (Agency : U.S.) and United States. National Park Service. Circular of General Information Regarding Yellowstone National Park, Wyoming. [Washington, D.C.]: U.S. G.P.O., 1928.

MLA (9th ed.) Citation

Yellowstone National Park (Agency : U.S.) and United States. National Park Service. Circular of General Information Regarding Yellowstone National Park, Wyoming. U.S. G.P.O., 1928.