Gaya APA
Kok Cheong, lee. (1984).
English grammar and usage .
Singapura:
Federal Publications.
Gaya Chicago
Kok Cheong, lee.
English grammar and usage.
Singapura:
Federal Publications,
1984.
Text.
Gaya MLA
Kok Cheong, lee.
English grammar and usage.
Singapura:
Federal Publications,
1984.
Text.
Gaya Turabian
Kok Cheong, lee.
English grammar and usage.
Singapura:
Federal Publications,
1984.
Print.