APA (7th ed.) Citation

United States. Railway Mail Service. (1916). General scheme of Kentucky. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Railway Mail Service. General Scheme of Kentucky. Washington: U.S. GPO, 1916.

MLA (9th ed.) Citation

United States. Railway Mail Service. General Scheme of Kentucky. U.S. GPO, 1916.

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