Borg, J. (1989). The Inner Game of Selling . . . Yourself. ELSEVIER.
Cita Chicago (17th ed.)Borg, James. The Inner Game of Selling . . . Yourself. ELSEVIER, 1989.
Cita MLA (8th ed.)Borg, James. The Inner Game of Selling . . . Yourself. ELSEVIER, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.