Printon, J. W. (1936). Our Mother of Perpetual Help: Novena, hymns and prayers (21st ed.). J. S. Paluch Co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPrinton, Joseph W. Our Mother of Perpetual Help: Novena, Hymns and Prayers. 21st ed. Chicago: J. S. Paluch Co, 1936.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPrinton, Joseph W. Our Mother of Perpetual Help: Novena, Hymns and Prayers. 21st ed. J. S. Paluch Co, 1936.
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