Freeman. How to Think about God. Princeton University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFreeman. How to Think About God. Princeton University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रFreeman. How to Think About God. Princeton University Press.
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