Obermayer, J. (2007). Managing sales leads: Turning cold prospects into hot customers. Mason, Ohio: Thomson/South-Western.
Παραπομπή Chicago StyleObermayer, James. Managing Sales Leads: Turning Cold Prospects Into Hot Customers. Mason, Ohio: Thomson/South-Western, 2007.
Παραπομπή MLAObermayer, James. Managing Sales Leads: Turning Cold Prospects Into Hot Customers. Mason, Ohio: Thomson/South-Western, 2007.
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