龚勋. (2012). 世界之最: Complete book of the world records. 汕头大学出版社.
Chicago (17e ed.) Bronvermelding龚勋. 世界之最: Complete Book of the World Records. 汕头大学出版社, 2012.
MLA (8e ed.) Bronvermelding龚勋. 世界之最: Complete Book of the World Records. 汕头大学出版社, 2012.
Let op: Deze citaties zijn niet altijd 100% accuraat.