Furfey, P. H. (1944). The mystery of iniquity. The Bruce Publishing Company.
Lua i Stíl Chicago (17ú heag.)Furfey, Paul Hanly. The Mystery of Iniquity. Milwaukee: The Bruce Publishing Company, 1944.
Lua MLA (8ú heag.)Furfey, Paul Hanly. The Mystery of Iniquity. The Bruce Publishing Company, 1944.
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