Fagan, B. M. (1998). People of the earth: An introduction to world prehistory (9th.ed.). Longman.
Cita Chicago (17th ed.)Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. New York: Longman, 1998.
Cita MLA (9th ed.)Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. Longman, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.