Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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