Woodstock College Press; Zorn, G. (1960). Woodstock Letters Index: Volumes 1-80. St. Louis University. Pius XII Memorial Library.
Dyfyniad Arddull ChicagoWoodstock College Press; Zorn, George. Woodstock Letters Index: Volumes 1-80. St. Louis University. Pius XII Memorial Library, 1960.
Dyfyniad MLAWoodstock College Press; Zorn, George. Woodstock Letters Index: Volumes 1-80. St. Louis University. Pius XII Memorial Library, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.