Gaya APA
Len, Evelyn. (1988).
Secondary 2 Vocabulary Guide & Practice .
Singapura:
Preston Corporation.
Gaya Chicago
Len, Evelyn.
Secondary 2 Vocabulary Guide & Practice.
Singapura:
Preston Corporation,
1988.
Text.
Gaya MLA
Len, Evelyn.
Secondary 2 Vocabulary Guide & Practice.
Singapura:
Preston Corporation,
1988.
Text.
Gaya Turabian
Len, Evelyn.
Secondary 2 Vocabulary Guide & Practice.
Singapura:
Preston Corporation,
1988.
Print.