Walker, S. (2017). The captain class: The hidden force that creates the world's greatest teams. Random House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWalker, Sam. The Captain Class: The Hidden Force That Creates the World's Greatest Teams. New York: Random House, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWalker, Sam. The Captain Class: The Hidden Force That Creates the World's Greatest Teams. Random House, 2017.
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