Churchil, G. A. .. e. (1990). Sales Force Management Planning, Implementation And Control Gilbert A. Churchil, Neil M Ford And Orville C. Walker. Irwin.
Čikaški stil citiranja (17. izdanje)Churchil, Gilbert A .. et..al. Sales Force Management Planning, Implementation And Control Gilbert A. Churchil, Neil M Ford And Orville C. Walker. Irwin, 1990.
MLA način citiranja (8. izdanje)Churchil, Gilbert A .. et..al. Sales Force Management Planning, Implementation And Control Gilbert A. Churchil, Neil M Ford And Orville C. Walker. Irwin, 1990.
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