APA (7th ed.) Citation

United States. Department of the Interior. (1926). Reading course for boys. GPO.

Chicago Style (17th ed.) Citation

United States. Department of the Interior. Reading Course for Boys. [Washington]: GPO, 1926.

MLA (9th ed.) Citation

United States. Department of the Interior. Reading Course for Boys. GPO, 1926.

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