Jochen Wirtz is pleased to describe himself as a best-selling writer. He has co-authored a textbook on services marketing that he not only uses as professor at the National University of Singapore Business School, but which has sold more than 700,000 copies.
约亨•维尔茨(Jochen Wirtz)乐于称自己为畅销书作家。他与人合著了一本服务营销的教科书，在自己的课上（他是新加坡国立大学商学院(National University of Singapore Business School)教授）使用，不仅如此，这本书已经卖出了逾70万本。
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