Wilczak, P. F. (1980). Toward the extended Christian family. Abbey Press.
Dyfyniad Arddull ChicagoWilczak, Paul F. Toward the Extended Christian Family. St. Meinrad, Indiana: Abbey Press, 1980.
Dyfyniad MLAWilczak, Paul F. Toward the Extended Christian Family. Abbey Press, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.