(1956). A Guide to the Church of Saint Gregory the Great (10th ed.). Durham West & Sons.
Chicago-Zitierstil (17. Ausg.)A Guide to the Church of Saint Gregory the Great. 10th ed. Bath: Durham West & Sons, 1956.
MLA-Zitierstil (8. Ausg.)A Guide to the Church of Saint Gregory the Great. 10th ed. Durham West & Sons, 1956.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.