Key points are not available for this paper at this time.
Orville C. Walker, Jr., Gilbert A. Churchill, Jr., Neil M. Ford, Motivation and Performance in Industrial Selling: Present Knowledge and Needed Research, Journal of Marketing Research, Vol. 14, No. 2 (May, 1977), pp. 156-168
Walker et al. (Sun,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: