龚勋. (2009). 中国未解之谜: Unsolved secrets of China. 云南教育出版社.
Chicago Style (17th ed.) Citation龚勋. 中国未解之谜: Unsolved Secrets of China. 云南教育出版社, 2009.
MLA (8th ed.) Citation龚勋. 中国未解之谜: Unsolved Secrets of China. 云南教育出版社, 2009.
Warning: These citations may not always be 100% accurate.