Gschwandtner, G. (2007). The psychology of sales success: Learn to think like your customer to close every sale. New York: McGraw-Hill.
استشهاد بنمط شيكاغوGschwandtner, Gerhard. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. New York: McGraw-Hill, 2007.
MLA استشهادGschwandtner, Gerhard. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. New York: McGraw-Hill, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.