Gaya APA
Dictionary of grammar & usage. (1997).
:
Longman Singapore Publisher.
Gaya Chicago
Dictionary of grammar & usage.
.
:
Longman Singapore Publisher,
1997.
Text.
Gaya MLA
Dictionary of grammar & usage.
.
:
Longman Singapore Publisher,
1997.
Text.
Gaya Turabian
Dictionary of grammar & usage.
:
Longman Singapore Publisher,
1997.
Print.