APA-referens (7:e uppl.)

Williams, G. L., & Williams, A. L. (1974). Crisis in European defence: The next ten years. St. Martin's Press.

Chicago-referens (17:e uppl.)

Williams, Geofrey Lee, och Alan Lee Williams. Crisis in European Defence: The Next Ten Years. New York: St. Martin's Press, 1974.

MLA-referens (9:e uppl.)

Williams, Geofrey Lee, och Alan Lee Williams. Crisis in European Defence: The Next Ten Years. St. Martin's Press, 1974.