APA Style
Wah, A, T, B. (2006).
70 Must-Know Maths Word Problems for Primary Levels Workbook 4 .
Singapore:
Singapore Asian Publications.
MLA Style
Wah, Alan, Tan, Boon.
"70 Must-Know Maths Word Problems for Primary Levels Workbook 4".
Singapore:
Singapore Asian Publications,
2006.
Text.