APA (7e ed.) Bronvermelding

KUHN, B. (1988). Hardball: The education of a baseball commissioner. McGraw-Hill Bo. co.

Chicago (17e ed.) Bronvermelding

KUHN, Bowie. Hardball: The Education of a Baseball Commissioner. New York: McGraw-Hill Bo. co, 1988.

MLA (9e ed.) Bronvermelding

KUHN, Bowie. Hardball: The Education of a Baseball Commissioner. McGraw-Hill Bo. co, 1988.