Obermayer, J. (2007). Managing sales leads: Turning cold prospects into hot customers. Mason, Ohio: Thomson/South-Western.
استشهاد بنمط شيكاغوObermayer, James. Managing Sales Leads: Turning Cold Prospects Into Hot Customers. Mason, Ohio: Thomson/South-Western, 2007.
MLA استشهادObermayer, James. Managing Sales Leads: Turning Cold Prospects Into Hot Customers. Mason, Ohio: Thomson/South-Western, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.