APA (7th ed.) Citation

United States. Post Office Department. (1928). [Post office inspection form on regulations for employees of 1st and 2nd class post offices]. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. [Post Office Inspection Form on Regulations for Employees of 1st and 2nd Class Post Offices]. [Washington]: GPO, 1928.

MLA (9th ed.) Citation

United States. Post Office Department. [Post Office Inspection Form on Regulations for Employees of 1st and 2nd Class Post Offices]. GPO, 1928.

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