O'Hara, E. V. (1931). Catholic Evidence Work in the United States: A Survey of Its Status and of Its Prospects. S.I..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रO'Hara, Edwin V. Catholic Evidence Work in the United States: A Survey of Its Status and of Its Prospects. S.I., 1931.
एमएलए (8वां संस्करण) प्रशस्ति पत्रO'Hara, Edwin V. Catholic Evidence Work in the United States: A Survey of Its Status and of Its Prospects. S.I., 1931.
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