俞天一著. (2018). 留痕划过天空. 现代出版社.
Chicago Style (17th ed.) Citation俞天一著. 留痕划过天空. 现代出版社, 2018.
MLA (8th ed.) Citation俞天一著. 留痕划过天空. 现代出版社, 2018.
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APA (7th ed.) Citation