APA (7th ed.) Citation

United States. Post Office Department. (1914). Postal laws and regulations pertaining to 2nd class of mail matter (corrected to July 1, 1914). GPO.

Chicago Style (17th ed.) Citation

United States. Post Office Department. Postal Laws and Regulations Pertaining to 2nd Class of Mail Matter (corrected to July 1, 1914). [Washington]: GPO, 1914.

MLA (9th ed.) Citation

United States. Post Office Department. Postal Laws and Regulations Pertaining to 2nd Class of Mail Matter (corrected to July 1, 1914). GPO, 1914.