Jabarkan Relikui dari Darah Kristus

Hari Raya Tubuh dan Darah Kristus

Michael Heinlen, An Early Image of a Mass of St. Gregory and Devotion to the Holy Blood at Weingarten Abbey, Gesta, Vol. 37, No. 1 (1998), pp. 55–62

Caroline Walker Bynum, The Blood of Christ in the Later Middle Ages, Church History, Vol. 71, No. 4 (Dec., 2002), pp. 685–71