The Roman index of forbidden books briefly explained /
by Francis S. Betten.
APA Citation
Betten, F. Sales., Book Arts Collection. (1940). The Roman index of forbidden books briefly explained. 3d and rev. ed. Chicago: Loyola University Press.
MLA Citation
Betten, Francis Sales, 1863-1942, and Book Arts Collection. The Roman Index of Forbidden Books Briefly Explained. 3d and rev. ed. Chicago: Loyola University Press, 1940.
Warning: These citations may not always be complete (especially for serials).