Evans, R. P. (2021). The Christmas promise (First Gallery Books hardcover edition.). Gallery Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEvans, Richard Paul. The Christmas Promise. First Gallery Books hardcover edition. New York: Gallery Books, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEvans, Richard Paul. The Christmas Promise. First Gallery Books hardcover edition. Gallery Books, 2021.
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