Gaya APA
English grammar for general application. (2003).
Surabaya:
Gitamedia press.
Gaya Chicago
English grammar for general application.
Cet. 1.
Surabaya:
Gitamedia press,
2003.
.
Gaya MLA
English grammar for general application.
Cet. 1.
Surabaya:
Gitamedia press,
2003.
.
Gaya Turabian
English grammar for general application.
Surabaya:
Gitamedia press,
2003.
.