↑ An acrostic in the motet's text suggests Marchetto was the composer.
↑ Anne Derbes and Mark Sandona, The Usurer's Heart: Giotto, Enrico Scrovegni, and the Arena Chapel in Padua. Pennsylvania State University Press, 2008.
↑ The connection of the Annunciation of the fresco cycles and the feast is explored by Laura Jacobus, "Giotto's Annunciation in the Arena Chapel, Padua" The Art Bulletin 81.1 (March 1999), pp. 93-107.
