APA (7th ed.) Citation

United States. Railway Mail Service. (1903). General scheme of New York, Jan. 1903. GPO.

Chicago Style (17th ed.) Citation

United States. Railway Mail Service. General Scheme of New York, Jan. 1903. [Washington]: GPO, 1903.

MLA (9th ed.) Citation

United States. Railway Mail Service. General Scheme of New York, Jan. 1903. GPO, 1903.

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