APA (7th ed.) Citation

United States. Post Office Department. (1945). List of post offices by classes, with salaries of postmasters, July 1, 1945. [s.n.].

Chicago Style (17th ed.) Citation

United States. Post Office Department. List of Post Offices by Classes, with Salaries of Postmasters, July 1, 1945. [Washington]: [s.n.], 1945.

MLA (9th ed.) Citation

United States. Post Office Department. List of Post Offices by Classes, with Salaries of Postmasters, July 1, 1945. [s.n.], 1945.