Alvarez, W. (2017). A most improbable journey: A big history of our planet and ourselves (First edition.). W.W. Norton & Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlvarez, Walter. A Most Improbable Journey: A Big History of Our Planet and Ourselves. First edition. New York: W.W. Norton & Company, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAlvarez, Walter. A Most Improbable Journey: A Big History of Our Planet and Ourselves. First edition. W.W. Norton & Company, 2017.
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