Carter, G. M., Herz, J. H., & Ranney, J. C. (1957). Major foreign powers: The Governments of Great Britain, France, Germany, and the Soviet Union (3d ed.). Harcourt, Brace.

Carter, Gwendolen M., John H. Herz, and John C. Ranney. Major Foreign Powers: The Governments of Great Britain, France, Germany, and the Soviet Union. 3d ed. New York: Harcourt, Brace, 1957.

Carter, Gwendolen M., et al. Major Foreign Powers: The Governments of Great Britain, France, Germany, and the Soviet Union. 3d ed. Harcourt, Brace, 1957.