Straw, C., & Gregor, I. (1988). Gregory the Great: Perfection in imperfection. The transformation of the classical heritage.
Citazione stile Chigago Style (17a edizione)Straw, Carole, e I. Gregor. "Gregory the Great: Perfection in Imperfection." The Transformation of the Classical Heritage 1988.
Citatione MLA (8a ed.)Straw, Carole, e I. Gregor. "Gregory the Great: Perfection in Imperfection." The Transformation of the Classical Heritage, 1988.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.