Gerhard Gschwandtner. (2007). The psychology of sales success: Learn to think like your customer to close every sale. New York: McGraw-Hill.
Chicago ZitierstilGerhard Gschwandtner. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. New York: McGraw-Hill, 2007.
MLA ZitierstilGerhard Gschwandtner. The Psychology of Sales Success: Learn to Think Like Your Customer to Close Every Sale. New York: McGraw-Hill, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.