APA (7th ed.) Citation

Koch, T. W. (1919). Books in the war: The romance of library war service. Houghton Mifflin Company.

Chicago Style (17th ed.) Citation

Koch, Theodore Wesley. Books in the War: The Romance of Library War Service. Boston: Houghton Mifflin Company, 1919.

MLA (9th ed.) Citation

Koch, Theodore Wesley. Books in the War: The Romance of Library War Service. Houghton Mifflin Company, 1919.