Nelson, W. (1956). Frank Duff, Recipient of the Marianist Award, 1956. eCommons.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNelson, Wayne. Frank Duff, Recipient of the Marianist Award, 1956. eCommons, 1956.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNelson, Wayne. Frank Duff, Recipient of the Marianist Award, 1956. eCommons, 1956.
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