库珀 & 郭峰. (2010). 不要开口就错: Just ask the right questions to get what you want. 东方出版社.
Chicago Style (17th ed.) Citation库珀 and 郭峰. 不要开口就错: Just Ask the Right Questions to Get What You Want. 东方出版社, 2010.
MLA citiranje库珀 and 郭峰. 不要开口就错: Just Ask the Right Questions to Get What You Want. 东方出版社, 2010.
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