William J. O,Neil. (2004). Business Leaders &Success: 55 Top Business Leaders &How They Achieved Greatness. Tata McGraw-Hill Publishing Company LTD.
Styl cytowania ChicagoWilliam J. O,Neil. Business Leaders &Success: 55 Top Business Leaders &How They Achieved Greatness. New Delhi: Tata McGraw-Hill Publishing Company LTD, 2004.
Styl cytowania MLAWilliam J. O,Neil. Business Leaders &Success: 55 Top Business Leaders &How They Achieved Greatness. Tata McGraw-Hill Publishing Company LTD, 2004.
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