Gregory I, P. (1509). In septem psalmos penitentiales explanatio. Theod. Martinus Alost.
Lua i Stíl Chicago (17ú heag.)Gregory I, Pope. In Septem Psalmos Penitentiales Explanatio. Antwerpen: Theod. Martinus Alost, 1509.
Lua MLA (8ú heag.)Gregory I, Pope. In Septem Psalmos Penitentiales Explanatio. Theod. Martinus Alost, 1509.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.