APA-viite (7. p.)

Willging, E. P. (1949). The Index to Catholic pamphlets in the English language. Catholic University of America Press.

Chicago-viite (17. p.)

Willging, Eugene P. The Index to Catholic Pamphlets in the English Language. Washington, D.C.: Catholic University of America Press, 1949.

MLA-viite (8. p.)

Willging, Eugene P. The Index to Catholic Pamphlets in the English Language. Catholic University of America Press, 1949.