APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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