Fagan, B. M. (1998). People of the earth: An introduction to world prehistory (9th.ed.). Longman.
Lua i Stíl Chicago (17ú heag.)Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. New York: Longman, 1998.
Lua MLA (9ú heag.)Fagan, Brian M. People of the Earth: An Introduction to World Prehistory. 9th.ed. Longman, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.