Karabell, Z. (2014). The leading indicators: A short history of the search for the right numbers (First Simon & Schuster hardcover edition.). Simon & Schuster.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKarabell, Zachary. The Leading Indicators: A Short History of the Search for the Right Numbers. First Simon & Schuster hardcover edition. New York: Simon & Schuster, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKarabell, Zachary. The Leading Indicators: A Short History of the Search for the Right Numbers. First Simon & Schuster hardcover edition. Simon & Schuster, 2014.
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