Straw, C. E. (1988). Gregory the Great: Perfection in imperfection. University of California Press.
Lua i Stíl Chicago (17ú heag.)Straw, Carole Ellen. Gregory the Great: Perfection in Imperfection. Berkeley: University of California Press, 1988.
Lua MLA (9ú heag.)Straw, Carole Ellen. Gregory the Great: Perfection in Imperfection. University of California Press, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.