Johnston, Mark W. Churchill/Ford/Walker's sales force management / Sales force management Mark W. Johnston, Greg W. Marshall - 8th ed. - Boston : McGraw-Hill/Irwin, 2006 - xvii, 491 p. : ill. ; 26 cm. - McGraw-Hill/Irwin series in marketing . Includes bibliographical references and indexes ISBN: 007296183X (hbk.) RM496.21 Subjects--Topical Terms: Sales management