于桐. (2012). 耶鲁深呼吸: Yale Deep Breath. 西苑出版社.
Chicago Style (17th ed.) Citation于桐. 耶鲁深呼吸: Yale Deep Breath. 西苑出版社, 2012.
MLA (8th ed.) Citation于桐. 耶鲁深呼吸: Yale Deep Breath. 西苑出版社, 2012.
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APA (7th ed.) Citation