APA (7th ed.) Citation

Laird, W. M. (1950). The geology of the south unit, Theodore Roosevelt National Memorial Park ([Rev. ed.].). [Published through the courtesy of the State Historical Society of North Dakota].

Chicago Style (17th ed.) Citation

Laird, Wilson M. The Geology of the South Unit, Theodore Roosevelt National Memorial Park. [Rev. ed.]. [Medora, N. D.]: [Published through the courtesy of the State Historical Society of North Dakota], 1950.

MLA (9th ed.) Citation

Laird, Wilson M. The Geology of the South Unit, Theodore Roosevelt National Memorial Park. [Rev. ed.]. [Published through the courtesy of the State Historical Society of North Dakota], 1950.