龚勋. (2009). 中国少年儿童智力开发百科全书: Encyclopedia of children's mind. 云南教育出版社.
Chicago (17e ed.) Bronvermelding龚勋. 中国少年儿童智力开发百科全书: Encyclopedia of Children's Mind. 云南教育出版社, 2009.
MLA (8e ed.) Bronvermelding龚勋. 中国少年儿童智力开发百科全书: Encyclopedia of Children's Mind. 云南教育出版社, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.