Donaldson, B. (1998). Sales management: Theory and practice (2nd ed.). Basingstoke: Macmillan Business.
Παραπομπή Chicago StyleDonaldson, Bill. Sales Management: Theory and Practice. 2nd ed. Basingstoke: Macmillan Business, 1998.
Παραπομπή MLADonaldson, Bill. Sales Management: Theory and Practice. 2nd ed. Basingstoke: Macmillan Business, 1998.
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