APA (7th ed.) Citation

Collins, R. F. (2008). World War I: Primary documents on events from 1914 to 1919. Greenwood Press.

Chicago Style (17th ed.) Citation

Collins, Ross F. World War I: Primary Documents on Events from 1914 to 1919. Westport, Conn.: Greenwood Press, 2008.

MLA (9th ed.) Citation

Collins, Ross F. World War I: Primary Documents on Events from 1914 to 1919. Greenwood Press, 2008.