Gaya APA
Basic English Conversation. (2003).
:
Gramedia Press.
Gaya Chicago
Basic English Conversation.
.
:
Gramedia Press,
2003.
Text.
Gaya MLA
Basic English Conversation.
.
:
Gramedia Press,
2003.
Text.
Gaya Turabian
Basic English Conversation.
:
Gramedia Press,
2003.
Print.