Blake, T. (2005). Championship selling: A blueprint for winning with today's customer. Ontario: John wiley & sons.
استشهاد بنمط شيكاغوBlake, Tom. Championship Selling: A Blueprint for Winning With Today's Customer. Ontario: John wiley & sons, 2005.
MLA استشهادBlake, Tom. Championship Selling: A Blueprint for Winning With Today's Customer. Ontario: John wiley & sons, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.