Vieira, W. (2008). The new professional salesman: Meeting challenges in the 21st century. Response.
Chicago ZitierstilVieira, Walter. The New Professional Salesman: Meeting Challenges in the 21st Century. New Delhi: Response, 2008.
MLA ZitierstilVieira, Walter. The New Professional Salesman: Meeting Challenges in the 21st Century. Response, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.