Scarre, C., & Fagan, B. M. (1997). Ancient civilizations. Longman.
Lua i Stíl Chicago (17ú heag.)Scarre, Christopher, agus Brian M. Fagan. Ancient Civilizations. New York: Longman, 1997.
Lua MLA (9ú heag.)Scarre, Christopher, agus Brian M. Fagan. Ancient Civilizations. Longman, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.