APA (7e ed.) Bronvermelding

O'Brien, J. A. (1954). Why marriages fail: A scientific study based on 7,000 case histories. Ave Maria Press.

Chicago (17e ed.) Bronvermelding

O'Brien, John A. Why Marriages Fail: A Scientific Study Based on 7,000 Case Histories. Notre Dame, Ind.: Ave Maria Press, 1954.

MLA (8e ed.) Bronvermelding

O'Brien, John A. Why Marriages Fail: A Scientific Study Based on 7,000 Case Histories. Ave Maria Press, 1954.