APA (7th ed.) Citation

United States. Railway Mail Service. (1913). Book of instructions for use of chief clerks, Railway Mail Service. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Railway Mail Service. Book of Instructions for Use of Chief Clerks, Railway Mail Service. Washington: U.S. GPO, 1913.

MLA (9th ed.) Citation

United States. Railway Mail Service. Book of Instructions for Use of Chief Clerks, Railway Mail Service. U.S. GPO, 1913.

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