Penn, R. (2016). The man who made things out of trees (First American edition.). W.W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPenn, Rob. The Man Who Made Things Out of Trees. First American edition. New York: W.W. Norton & Company, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPenn, Rob. The Man Who Made Things Out of Trees. First American edition. W.W. Norton & Company, 2016.
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