KUHN, B. (1988). Hardball: The education of a baseball commissioner. McGraw-Hill Bo. co.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKUHN, Bowie. Hardball: The Education of a Baseball Commissioner. New York: McGraw-Hill Bo. co, 1988.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKUHN, Bowie. Hardball: The Education of a Baseball Commissioner. McGraw-Hill Bo. co, 1988.
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