Gaya APA
Common errors in english. (2008).
Jakarta:
Tulus Jaya.
Gaya Chicago
Common errors in english.
.
Jakarta:
Tulus Jaya,
2008.
Text.
Gaya MLA
Common errors in english.
.
Jakarta:
Tulus Jaya,
2008.
Text.
Gaya Turabian
Common errors in english.
Jakarta:
Tulus Jaya,
2008.
Print.