Marsden, G. M., & Mackenzie, R. I. (2016). C.s. lewis's mere christianity: A biography (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarsden, George M., और Robert Ian Mackenzie. C.s. Lewis's Mere Christianity: A Biography. Unabridged. Prince Frederick: Recorded Books Inc., 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarsden, George M., और Robert Ian Mackenzie. C.s. Lewis's Mere Christianity: A Biography. Unabridged. Recorded Books Inc., 2016.
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