Gaya APA
Kheong, D, F, H. (2007).
My Pals are here! Maths Enrichment 2nd Edition 1B (2).
Singapore:
Marshal Cavendish Education.
Gaya MLA
Kheong, Dr, Fong, Ho.
"My Pals are here! Maths Enrichment 2nd Edition 1B".
2
Singapore:
Marshal Cavendish Education,
2007.
Print.