Markel, H. (2024). Origin story: The trials of Charles Darwin (First edition.). W. W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMarkel, Howard. Origin Story: The Trials of Charles Darwin. First edition. New York, NY: W. W. Norton & Company, 2024.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMarkel, Howard. Origin Story: The Trials of Charles Darwin. First edition. W. W. Norton & Company, 2024.
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