Schiffman, S. (2008). The 25 sales habits of highly successful salespeople (3rd ed.). Adams Media.
Citación estilo ChicagoSchiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Avon, Mass.: Adams Media, 2008.
Cita MLASchiffman, Stephan. The 25 Sales Habits of Highly Successful Salespeople. 3rd ed. Adams Media, 2008.
Warning: These citations may not always be 100% accurate.