Gilson, E. (1957). The church speaks to the modern world The social teachings of Leo XIII (4ª ed.). Image Books.
Chicago-Zitierstil (17. Ausg.)Gilson, Etienne. The Church Speaks to the Modern World The Social Teachings of Leo XIII. 4ª ed. Image Books, 1957.
MLA-Zitierstil (9. Ausg.)Gilson, Etienne. The Church Speaks to the Modern World The Social Teachings of Leo XIII. 4ª ed. Image Books, 1957.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.