APA (7th ed.) Citation

Willging, E. P. (1937). The Index to American Catholic pamphlets. Catholic Library Service.

Chicago Style (17th ed.) Citation

Willging, Eugene P. The Index to American Catholic Pamphlets. [Saint Paul, Minn.: Catholic Library Service, 1937.

MLA (8th ed.) Citation

Willging, Eugene P. The Index to American Catholic Pamphlets. Catholic Library Service, 1937.