Wolferstan, B. (1922). The duties of parents towards their children. Catholic Truth Society.
Chicago-referens (17:e uppl.)Wolferstan, Bertram. The Duties of Parents Towards Their Children. London: Catholic Truth Society, 1922.
MLA-referens (8:e uppl.)Wolferstan, Bertram. The Duties of Parents Towards Their Children. Catholic Truth Society, 1922.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.