APA (7th ed.) Citation

Gilson, E. (1957). The church speaks to the modern world The social teachings of Leo XIII (4ª ed.). Image Books.

Chicago Style (17th ed.) Citation

Gilson, Etienne. The Church Speaks to the Modern World The Social Teachings of Leo XIII. 4ª ed. Image Books, 1957.

MLA (9th ed.) Citation

Gilson, Etienne. The Church Speaks to the Modern World The Social Teachings of Leo XIII. 4ª ed. Image Books, 1957.