Nordhagen, Per Jonas. “The Frescoes of Pope John VII (705-707 A.D.) in S. Maria Antica”. Acta ad archaeologiam et artium historiam pertinentia 29, no. 15 N.S. (March 14, 2018): 163–176. Accessed July 22, 2024. https://journals.uio.no/acta/article/view/6080.