Keller, J. (2008). Mr. Gatling's terrible marvel: The gun that changed everything and the misunderstood genius who invented it. Viking.
Chicago-Zitierstil (17. Ausg.)Keller, Julia. Mr. Gatling's Terrible Marvel: The Gun That Changed Everything and the Misunderstood Genius Who Invented It. New York: Viking, 2008.
MLA-Zitierstil (9. Ausg.)Keller, Julia. Mr. Gatling's Terrible Marvel: The Gun That Changed Everything and the Misunderstood Genius Who Invented It. Viking, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.