APA (7th ed.) Citation

Barnes, H. E. (1927). The genesis of the World War: An introduction to the problem of war guilt (2nd rev. ed.). A.A. Knopf.

Chicago Style (17th ed.) Citation

Barnes, Harry Elmer. The Genesis of the World War: An Introduction to the Problem of War Guilt. 2nd rev. ed. New York: A.A. Knopf, 1927.

MLA (9th ed.) Citation

Barnes, Harry Elmer. The Genesis of the World War: An Introduction to the Problem of War Guilt. 2nd rev. ed. A.A. Knopf, 1927.