Sales force management :
Churchill, Gilbert A.
Sales force management : planning, implementation, and control / Gilbert A. Churchill, Jr., Neil M. Ford, Orville C. Walker, Jr. - 3rd ed. - Homewood, IL : Irwin, c1990. - xviii, 845 p. : ill. ; 24 cm. - The Irwin series in marketing .
Sales force management : planning, implementation, and control / Gilbert A. Churchill, Jr., Neil M. Ford, Orville C. Walker, Jr. - 3rd ed. - Homewood, IL : Irwin, c1990. - xviii, 845 p. : ill. ; 24 cm. - The Irwin series in marketing .