APA (7th ed.) Citation

United States. Postmaster General. (1909). Scheme of principal firms and buildings, Cincinnati, Ohio. GPO.

Chicago Style (17th ed.) Citation

United States. Postmaster General. Scheme of Principal Firms and Buildings, Cincinnati, Ohio. [Washington]: GPO, 1909.

MLA (9th ed.) Citation

United States. Postmaster General. Scheme of Principal Firms and Buildings, Cincinnati, Ohio. GPO, 1909.

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