APA (7th ed.) Citation

United States. Department of the Interior. (1929). Fifty-first annual report of Director of Geological Survey to Secretary of Interior. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Fifty-first Annual Report of Director of Geological Survey to Secretary of Interior. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. Department of the Interior. Fifty-first Annual Report of Director of Geological Survey to Secretary of Interior. GPO, 1929.

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