Hertvik, W. (1960). Instructions before marriage. Companion Press.
Dyfyniad Arddull ChicagoHertvik, Wenceslaus. Instructions Before Marriage. St. Francis, Ind.: Companion Press, 1960.
Dyfyniad MLAHertvik, Wenceslaus. Instructions Before Marriage. Companion Press, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.