Patterson, Frank A.
The Middle English Penitential Lyric.
Columbia University Studies in English.
New York: Columbia Press, 1911: 18-20.
Patterson, Frank A.
“Hymnal from MS. Additional 34193, British Museum.”
Medieval Studies in Memory of Gertrude Schoepperle Loomis.
Roger Sherman Loomis, ed.
New York: Columbia UP, 1927: 443-88: 457-60.