Haywood, R. M. (1971). The ancient world. David McKay Co..
Cita Chicago (17th ed.)Haywood, Richard Mansfield. The Ancient World. New York: David McKay Co., 1971.
Cita MLA (9th ed.)Haywood, Richard Mansfield. The Ancient World. David McKay Co., 1971.
Atenció: Aquestes cites poden no estar 100% correctes.