APA (7th ed.) Citation

United States. Superintendent of Documents. (1930). What public documents are and how to get them. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Superintendent of Documents. What Public Documents Are and How to Get Them. Washington: U.S. GPO, 1930.

MLA (9th ed.) Citation

United States. Superintendent of Documents. What Public Documents Are and How to Get Them. U.S. GPO, 1930.

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