Willging, E. P. (1949). The Index to Catholic pamphlets in the English language. Catholic University of America Press.
Lua i Stíl Chicago (17ú heag.)Willging, Eugene P. The Index to Catholic Pamphlets in the English Language. Washington, D.C.: Catholic University of America Press, 1949.
Lua MLA (8ú heag.)Willging, Eugene P. The Index to Catholic Pamphlets in the English Language. Catholic University of America Press, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.