KUHN, B. (1988). Hardball: The education of a baseball commissioner. McGraw-Hill Bo. co.
Chicago-čujuhus (17. p.)KUHN, Bowie. Hardball: The Education of a Baseball Commissioner. New York: McGraw-Hill Bo. co, 1988.
MLA-čujuhus (9. p.)KUHN, Bowie. Hardball: The Education of a Baseball Commissioner. McGraw-Hill Bo. co, 1988.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.