APA (7th ed.) Citation

United States. Department of the Interior. (1931). Instructions under Act of Mar. 4, 1931, amending Sections 17 and 27 of Act of Feb. 25, 1920. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Instructions Under Act of Mar. 4, 1931, Amending Sections 17 and 27 of Act of Feb. 25, 1920. [Washington]: GPO, 1931.

MLA (9th ed.) Citation

United States. Department of the Interior. Instructions Under Act of Mar. 4, 1931, Amending Sections 17 and 27 of Act of Feb. 25, 1920. GPO, 1931.