Billington, R. A. 1., & Ridge, M. (1982). Westward expansion: A history of the American frontier (5. edition.). New York: Macmillan Publishing Co., INC..
Chicago Style CitationBillington, Ray Allen 1903-1981, and M. Ridge. Westward Expansion: A History of the American Frontier. 5. edition. New York: Macmillan Publishing Co., INC., 1982.
MLA CitationBillington, Ray Allen 1903-1981, and M. Ridge. Westward Expansion: A History of the American Frontier. 5. edition. New York: Macmillan Publishing Co., INC., 1982.
Warning: These citations may not always be 100% accurate.