APA (7th ed.) Citation

United States. Railway Mail Service. (1903). General scheme of State of Illinois, Sept. 1903. GPO.

Chicago Style (17th ed.) Citation

United States. Railway Mail Service. General Scheme of State of Illinois, Sept. 1903. [Washington]: GPO, 1903.

MLA (9th ed.) Citation

United States. Railway Mail Service. General Scheme of State of Illinois, Sept. 1903. GPO, 1903.

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