Frankforter, A. D. (1999). The medieval millennium: An introduction. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Frankforter, A. Daniel. The Medieval Millennium: An Introduction. Upper Saddle River, N.J: Prentice Hall, 1999.
Lua MLA (9ú heag.)Frankforter, A. Daniel. The Medieval Millennium: An Introduction. Prentice Hall, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.