Craig, A. M., Graham, W. A., Kagan, D., Ozment, S., & Turner, F. M. (2005). The heritage of world civilizations (Seventh edition.). Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Craig, Albert M., William A. Graham, Donald Kagan, Steven Ozment, agus Frank M. Turner. The Heritage of World Civilizations. Seventh edition. Upper Saddle River, New Jersey: Pearson Prentice Hall, 2005.
Lua MLA (9ú heag.)Craig, Albert M., et al. The Heritage of World Civilizations. Seventh edition. Pearson Prentice Hall, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.