无弦. (2009). D级危楼: Before gabriel's trumpet sounds. 宁夏人民出版社.
Chicago Style (17th ed.) Citation无弦. D级危楼: Before Gabriel's Trumpet Sounds. 宁夏人民出版社, 2009.
MLA (8th ed.) Citation无弦. D级危楼: Before Gabriel's Trumpet Sounds. 宁夏人民出版社, 2009.
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