Kristof, N. D., & WuDunn, S. (2020). Tightrope: Americans reaching for hope (First large print edition.). Random House Large Print.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKristof, Nicholas D., और Sheryl WuDunn. Tightrope: Americans Reaching for Hope. First large print edition. New York: Random House Large Print, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKristof, Nicholas D., और Sheryl WuDunn. Tightrope: Americans Reaching for Hope. First large print edition. Random House Large Print, 2020.
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