Gaya APA
Road to english conversation. (1994).
:
Pustaka Pelajar.
Gaya Chicago
Road to english conversation.
.
:
Pustaka Pelajar,
1994.
Text.
Gaya MLA
Road to english conversation.
.
:
Pustaka Pelajar,
1994.
Text.
Gaya Turabian
Road to english conversation.
:
Pustaka Pelajar,
1994.
Print.