APA (7th ed.) Citation

Betten, F. S. (1925). The Roman index of forbidden books briefly explained. Loyola University Press.

Chicago Style (17th ed.) Citation

Betten, Francis S. The Roman Index of Forbidden Books Briefly Explained. Chicago, Ill.: Loyola University Press, 1925.

MLA (8th ed.) Citation

Betten, Francis S. The Roman Index of Forbidden Books Briefly Explained. Loyola University Press, 1925.