APA (7th ed.) Citation

United States. Post Office Department. (1932). Domestic postage rates, et cetera, Oct. 1, 1932. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Domestic Postage Rates, Et Cetera, Oct. 1, 1932. [Washington]: GPO, 1932.

MLA (9th ed.) Citation

United States. Post Office Department. Domestic Postage Rates, Et Cetera, Oct. 1, 1932. GPO, 1932.

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