Gaya APA
Creative english conversation. (2003).
Surabaya:
Gitamedia Press.
Gaya Chicago
Creative english conversation.
.
Surabaya:
Gitamedia Press,
2003.
Text.
Gaya MLA
Creative english conversation.
.
Surabaya:
Gitamedia Press,
2003.
Text.
Gaya Turabian
Creative english conversation.
Surabaya:
Gitamedia Press,
2003.
Print.