张凯元著. (2017). 慢销售，卖得快. 花山文艺出版社.
Chicago Style (17th ed.) Citation张凯元著. 慢销售，卖得快. 花山文艺出版社, 2017.
MLA (8th ed.) Citation张凯元著. 慢销售，卖得快. 花山文艺出版社, 2017.
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APA (7th ed.) Citation