龚勋. (2009). 世界之最: Complete book of the world records. 云南教育出版社.
Cita Chicago Style (17a ed.)龚勋. 世界之最: Complete Book of the World Records. 云南教育出版社, 2009.
Cita MLA (8a ed.)龚勋. 世界之最: Complete Book of the World Records. 云南教育出版社, 2009.
Precaución: Estas citas no son 100% exactas.