Anderson, D. (2007). How to deal with difficult customers: 10 simple strategies for selling to the stubborn, obnoxious, and belligerent. John Wiley & Sons.
Trích dẫn kiểu ChicagoAnderson, Dave. How to Deal With Difficult Customers: 10 Simple Strategies for Selling to the Stubborn, Obnoxious, and Belligerent. John Wiley & Sons, 2007.
Deismireacht MLAAnderson, Dave. How to Deal With Difficult Customers: 10 Simple Strategies for Selling to the Stubborn, Obnoxious, and Belligerent. John Wiley & Sons, 2007.
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