Cooper. Twenty Questions That Shaped World Christian History. Augsburg Fortress Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCooper. Twenty Questions That Shaped World Christian History. Augsburg Fortress Publishers.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCooper. Twenty Questions That Shaped World Christian History. Augsburg Fortress Publishers.
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