Fagan, B. M. (1998). People of the earth: An introduction to world prehistory (9th.ed.). Longman.

Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. New York: Longman, 1998.

Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. Longman, 1998.