Martínez-Göllner, Marie Louise. «Mode and Change of Mode in the 13th-Century Motet». Anuario Musical, no. 52 (diciembre 30, 1997): 3–14. Accedido abril 26, 2024. https://anuariomusical.revistas.csic.es/index.php/anuariomusical/article/view/286.