Richards, R. (1974). D'Alzon: Fighter for God. Assumptionist Provincial House.
Dyfyniad Arddull ChicagoRichards, Richard. D'Alzon: Fighter for God. New York: Assumptionist Provincial House, 1974.
Dyfyniad MLARichards, Richard. D'Alzon: Fighter for God. Assumptionist Provincial House, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.