Ryan, J. A. (1934). The Catholic Teaching on Our Industrial System. Washington, D.C..
Chicago (17e ed.) BronvermeldingRyan, John A. The Catholic Teaching on Our Industrial System. Washington, D.C., 1934.
MLA (8e ed.) BronvermeldingRyan, John A. The Catholic Teaching on Our Industrial System. Washington, D.C., 1934.
Let op: Deze citaties zijn niet altijd 100% accuraat.