APA (7th ed.) Citation

Koenig, R. L., & Dietz, N. (2006). The fourth horseman: [one man's mission to wage the Great War in America]. Tantor.

Chicago Style (17th ed.) Citation

Koenig, Robert L., and Norman Dietz. The Fourth Horseman: [one Man's Mission to Wage the Great War in America]. [Old Saybrook, Conn.]: Tantor, 2006.

MLA (9th ed.) Citation

Koenig, Robert L., and Norman Dietz. The Fourth Horseman: [one Man's Mission to Wage the Great War in America]. Tantor, 2006.