Gaya APA
English grammar for general application. (2003).
Surabaya:
Gitamedia Press.
Gaya Chicago
English grammar for general application.
.
Surabaya:
Gitamedia Press,
2003.
Text.
Gaya MLA
English grammar for general application.
.
Surabaya:
Gitamedia Press,
2003.
Text.
Gaya Turabian
English grammar for general application.
Surabaya:
Gitamedia Press,
2003.
Print.