Churchill, G. A. (1981). Sales force management: Planning, implementation, and control. Richard D. Irwin.
Lua i Stíl Chicago (17ú heag.)Churchill, Gilbert A. Sales Force Management: Planning, Implementation, and Control. Richard D. Irwin, 1981.
Lua MLA (9ú heag.)Churchill, Gilbert A. Sales Force Management: Planning, Implementation, and Control. Richard D. Irwin, 1981.
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