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.
Cita MLA龚勋. 中国未解之谜: Unsolved Secrets of China. 云南教育出版社, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.