Bentley, J. H., & Ziegler, H. F. (2003). Traditions & encounters: A global perspective on the past (Second edition.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Bentley, Jerry H., agus Herbert F. Ziegler. Traditions & Encounters: A Global Perspective on the Past. Second edition. Boston: McGraw-Hill, 2003.
Lua MLA (8ú heag.)Bentley, Jerry H., agus Herbert F. Ziegler. Traditions & Encounters: A Global Perspective on the Past. Second edition. McGraw-Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.