Uribe Ulloa, Héctor. “GLORIA IN EXCELSIS DEO. THE GREGORIAN CHANT IN MEDIEVAL ART: Arte Medieval, San Gregorio Magno, Canto Gregoriano”. Anales de Teología 16, no. 2 (January 10, 2023): 427–440. Accessed July 3, 2024. https://revistas.ucsc.cl/index.php/analesdeteologia/article/view/1911.