Hahn, F. (1973). The worship of the early church. Fortress Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHahn, Ferdinand. The Worship of the Early Church. Philadelphia: Fortress Press, 1973.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHahn, Ferdinand. The Worship of the Early Church. Fortress Press, 1973.
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