Gaya APA

Mok, H. (2000). Challenging Maths Primary [6] : A Topical Approach (Cet. 1.--). Singapore: Federal Publications.

Gaya MLA

Mok, H.N.. "Challenging Maths Primary [6] : A Topical Approach". Cet. 1.-- Singapore: Federal Publications, 2000. Text.