McKay, J. P., & Hill, B. D. (1987). A history of world societies (3rd ed.). Houghton Mifflin.

McKay, John P., and Bennett D. Hill. A History of World Societies. 3rd ed. Dallas: Houghton Mifflin, 1987.

McKay, John P., and Bennett D. Hill. A History of World Societies. 3rd ed. Houghton Mifflin, 1987.