Gaya APA
Ng., F. (2001).
Problem-Solving Processes in Mathematics [3] : Part 2 (Cet. 2.--).
Singapore:
Educational Publishing House Pte Ltd.
Gaya MLA
Ng., Fabian.
"Problem-Solving Processes in Mathematics [3] : Part 2".
Cet. 2.--
Singapore:
Educational Publishing House Pte Ltd,
2001.
Text.