Haas, K. B. (1957). How to develop successful salesmen. Tata Mc Grow-Hill.
Chicago Edition CitationHaas, Kenneth. B. How to Develop Successful Salesmen. New Delhi: Tata Mc Grow-Hill, 1957.
Cita MLAHaas, Kenneth. B. How to Develop Successful Salesmen. Tata Mc Grow-Hill, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.