Higgins, G. (1971). Labor Day statement, 1971. United States Catholic Conference.
Chicago (17e ed.) BronvermeldingHiggins, George. Labor Day Statement, 1971. Washington D.C.: United States Catholic Conference, 1971.
MLA (8e ed.) BronvermeldingHiggins, George. Labor Day Statement, 1971. United States Catholic Conference, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.