PEDERSON, Carlton A. - WRIGHT, Milburn D. - WEITZ, Barton A. Selling : Principles and Methods. 9th Edition. Homewood : IRWIN, 1988. 644 s. ISBN 0-256-03644-6. [Copy count : 1, currently available 1, at library only 0]
PEDERSON, Carlton A. - WRIGHT, Milburn D. Salesmanship : Principles and Methods. 5. ed. Homewood : Irwin, 1971. 699 s. [Copy count : 1, currently available 1, at library only 0]
