O'Connor, J. (1976). A ballad of William Tirry: An Augustinian friar, 1609-54. Augustinian Community.
Dyfyniad Arddull ChicagoO'Connor, John. A Ballad of William Tirry: An Augustinian Friar, 1609-54. Galway: Augustinian Community, 1976.
Dyfyniad MLAO'Connor, John. A Ballad of William Tirry: An Augustinian Friar, 1609-54. Augustinian Community, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.