APA (7th ed.) Citation

United States. Post Office Department. (1929). Allowance for tare when weighing 2nd-class matter in sacks. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Allowance for Tare When Weighing 2nd-class Matter in Sacks. [Washington]: GPO, 1929.

MLA (9th ed.) Citation

United States. Post Office Department. Allowance for Tare When Weighing 2nd-class Matter in Sacks. GPO, 1929.

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