APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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