APA (7th ed.) Citation

United States. Department of the Interior. Office of the Secretary. (1931). Two years of Department of Interior, 1929-1931; address by Hon. Ray Lyman Wilbur, Secretary of Interior, in National Radio Forum, Washington, May 2, 1931. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Office of the Secretary. Two Years of Department of Interior, 1929-1931; Address by Hon. Ray Lyman Wilbur, Secretary of Interior, in National Radio Forum, Washington, May 2, 1931. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

United States. Department of the Interior. Office of the Secretary. Two Years of Department of Interior, 1929-1931; Address by Hon. Ray Lyman Wilbur, Secretary of Interior, in National Radio Forum, Washington, May 2, 1931. U.S. GPO, 1931.