(1915). The Key of heaven: A manual of prayers and instructions for Catholics. J.B. Steinbrenner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रThe Key of Heaven: A Manual of Prayers and Instructions for Catholics. New York: J.B. Steinbrenner, 1915.
एमएलए (8वां संस्करण) प्रशस्ति पत्रThe Key of Heaven: A Manual of Prayers and Instructions for Catholics. J.B. Steinbrenner, 1915.
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