The best seller! :
Willingham, Ron
The best seller! : the new psychology of selling and persuading people / by R. Willingham. - New Jersey Prentice Hall 1984. - 171p. 23cm.
0130719609
Selling
The best seller! : the new psychology of selling and persuading people / by R. Willingham. - New Jersey Prentice Hall 1984. - 171p. 23cm.
0130719609
Selling