Gaya APA
B.A, L, H, E., Yan, Y, S. (2001).
EFFECTIVE SKILL FOR "0" LEVEL ENGLISH (5).
Singapore:
South East Printing Pte Ltd.
Gaya MLA
B.A, Low, Hui, Eng., Yan, Yeo, Seok.
"EFFECTIVE SKILL FOR "0" LEVEL ENGLISH".
5
Singapore:
South East Printing Pte Ltd,
2001.
Text.