Johnston, M. W., & Marshall, G. W. (2006). Churchill/Ford/Walker's sales force management (8th ed.). McGraw-Hill/Irwin.
Citace podle Chicago (17th ed.)Johnston, Mark W., a Greg W. Marshall. Churchill/Ford/Walker's Sales Force Management. 8th ed. Boston: McGraw-Hill/Irwin, 2006.
Citace podle MLA (9th ed.)Johnston, Mark W., a Greg W. Marshall. Churchill/Ford/Walker's Sales Force Management. 8th ed. McGraw-Hill/Irwin, 2006.
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