Willging, E. P. (1949). The Index to Catholic pamphlets in the English language. Catholic University of America Press.
Dyfyniad Arddull ChicagoWillging, Eugene P. The Index to Catholic Pamphlets in the English Language. Washington, D.C.: Catholic University of America Press, 1949.
Dyfyniad MLAWillging, Eugene P. The Index to Catholic Pamphlets in the English Language. Catholic University of America Press, 1949.
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