Παραπομπή APA

Institute of marketing and sales management. (1961). Manuel of sales management. Sir Issac Pitman and Sons.

Παραπομπή Chicago Style

Institute of marketing and sales management. Manuel of Sales Management. London: Sir Issac Pitman and Sons, 1961.

Παραπομπή MLA

Institute of marketing and sales management. Manuel of Sales Management. Sir Issac Pitman and Sons, 1961.