Gaya APA
Hwa, D, K, S. (2010).
My Pals are Here! Science International Edition Activity Book 6A (1).
Singapore:
Marshal Cavendish Education.
Gaya MLA
Hwa, Dr, Kwa, Siew.
"My Pals are Here! Science International Edition Activity Book 6A".
1
Singapore:
Marshal Cavendish Education,
2010.
Print.