APA (7th ed.) Citation

United States. Post Office Department. (1911). Hearings of Commission on 2nd-Class Mail Matter in New York City, beginning Aug. 1, 1911. GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Hearings of Commission on 2nd-Class Mail Matter in New York City, Beginning Aug. 1, 1911. [Washington]: GPO, 1911.

MLA (9th ed.) Citation

United States. Post Office Department. Hearings of Commission on 2nd-Class Mail Matter in New York City, Beginning Aug. 1, 1911. GPO, 1911.