Chan, K. L. (2006). Understanding of the equality sign among six-years old children.
Chicago Style (17th ed.) CitationChan, Kar Lai. Understanding of the Equality Sign Among Six-years Old Children. 2006.
MLA引文Chan, Kar Lai. Understanding of the Equality Sign Among Six-years Old Children. 2006.
警告：这些引文格式不一定是100％准确.