APA (7th ed.) Citation

United States. Post Office Department. (1931). Instructions to postmasters for reporting personnel changes beginning July 1, 1931. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Instructions to Postmasters for Reporting Personnel Changes Beginning July 1, 1931. Washington: U.S. GPO, 1931.

MLA (9th ed.) Citation

United States. Post Office Department. Instructions to Postmasters for Reporting Personnel Changes Beginning July 1, 1931. U.S. GPO, 1931.

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