Παραπομπή APA

Haas, K. B. (1957). How to develop successful salesmen. Tata Mc Grow-Hill.

Παραπομπή Chicago Style

Haas, Kenneth. B. How to Develop Successful Salesmen. New Delhi: Tata Mc Grow-Hill, 1957.

Παραπομπή MLA

Haas, Kenneth. B. How to Develop Successful Salesmen. Tata Mc Grow-Hill, 1957.