Manning, G. L. (2004). Selling today: Creating customer value. Pearson.
Chicago Edition CitationManning, Gerald L. Selling Today: Creating Customer Value. New Delhi: Pearson, 2004.
Cita MLAManning, Gerald L. Selling Today: Creating Customer Value. Pearson, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.