Smith, D. M. (1997). The practical executive and leadership. NTC Business Books.
Citazione stile Chigago Style (17a edizione)Smith, Dayle M. The Practical Executive and Leadership. Lincolnwood, Ill: NTC Business Books, 1997.
Citatione MLA (9a ed.)Smith, Dayle M. The Practical Executive and Leadership. NTC Business Books, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.