张丹丹. (2010). 赢在乐观: Win in the optimistic. 中国商业出版社.
Chicago Style (17th ed.) Citation张丹丹. 赢在乐观: Win in the Optimistic. 中国商业出版社, 2010.
MLA citiranje张丹丹. 赢在乐观: Win in the Optimistic. 中国商业出版社, 2010.
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