Youngberg, N. R. (1970). Under sealed orders The history of Gus Youngberg. Pacific Press.
Dyfyniad Arddull ChicagoYoungberg, Norma R. Under Sealed Orders The History of Gus Youngberg. Pacific Press, 1970.
Dyfyniad MLAYoungberg, Norma R. Under Sealed Orders The History of Gus Youngberg. Pacific Press, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.