Pederson, Carlton A. Salesmanship: principles and methods / [by] Carlton A. Pederson [and] Milburn D. Wright. - 3th ed. - Homewood, Ill., R. D. Irwin, 1961. - xiii, 724 p : ill.; 24 cm. Beginning with 6th ed. (1976) published under title: Selling. Includes bibliographies. LCCN: 79135764 Subjects--Topical Terms: Selling. Dewey Class. No.: 658.85 / PES 1961