Biblioteca capitolare. A 47 & Gregorian Chant Manuscript Collection. (1975). [Gradual with tropes and prosae from Ravenna, early 12th century (Gregorian chant)].
Chicago Style (17th ed.) CitationBiblioteca capitolare. A 47 and Gregorian Chant Manuscript Collection. [Gradual with Tropes and Prosae from Ravenna, Early 12th Century (Gregorian Chant)]. 1975.
MLA (8th ed.) CitationBiblioteca capitolare. A 47 and Gregorian Chant Manuscript Collection. [Gradual with Tropes and Prosae from Ravenna, Early 12th Century (Gregorian Chant)]. 1975.
Warning: These citations may not always be 100% accurate.