APA

O'Neil W. J., . (2004). Business leaders & success. New York: McGraw-Hill.

Chicago

O'Neil William J, . 2004. Business leaders & success. New York: McGraw-Hill.

Harvard

O'Neil W. J., . (2004). Business leaders & success. New York: McGraw-Hill.

MLA

O'Neil William J, . Business leaders & success. New York: McGraw-Hill. 2004.