Gretz, Karl F. Professional selling : a consultative approach / Karl F. Gretz, Steven R. Drozdeck, Walter J. Wiesenhutter. - Chicago : Irwin, c1996. - xxvii, 469 p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 0256143846 LCCN: 95006910 Subjects--Topical Terms: Selling. LC Class. No.: HF5438.25 / .G737 1996 Dewey Class. No.: 658.85 / GRP 1996