龚勋. (2009). 世界之最: Complete book of the world records. 云南教育出版社.
Chicago Style (17th ed.) Citation龚勋. 世界之最: Complete Book of the World Records. 云南教育出版社, 2009.
Cita MLA龚勋. 世界之最: Complete Book of the World Records. 云南教育出版社, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.