APA (7th ed.) Citation

United States. Post Office Department. (1928). Domestic postage rates, et cetera, effective July 1, 1928. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Domestic Postage Rates, Et Cetera, Effective July 1, 1928. [Washington]: GPO, 1928.

MLA (9th ed.) Citation

United States. Post Office Department. Domestic Postage Rates, Et Cetera, Effective July 1, 1928. GPO, 1928.

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