Gates, B., & Rogak, L. (2012). Impatient optimist: Bill Gates in his own words. B2 Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGates, Bill, और Lisa Rogak. Impatient Optimist: Bill Gates in His Own Words. Chicago: B2 Books, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGates, Bill, और Lisa Rogak. Impatient Optimist: Bill Gates in His Own Words. B2 Books, 2012.
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