Kornbluth, G. A. (1995). Engraved gems of the Carolingian empire. Pennsylvania State University Press.
Cita Chicago Style (17a ed.)Kornbluth, Genevra Alisoun. Engraved Gems of the Carolingian Empire. University Park: Pennsylvania State University Press, 1995.
Cita MLA (9a ed.)Kornbluth, Genevra Alisoun. Engraved Gems of the Carolingian Empire. Pennsylvania State University Press, 1995.
Precaución: Estas citas no son 100% exactas.