APA (7th ed.) Citation

United States. Department of the Interior. (1915). Educational directory, 1914-15. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Educational Directory, 1914-15. [Washington]: GPO, 1915.

MLA (9th ed.) Citation

United States. Department of the Interior. Educational Directory, 1914-15. GPO, 1915.

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