Gaya APA
Practical english conversation. (2006).
Jakarta:
Kesaint Blanc.
Gaya Chicago
Practical english conversation.
.
Jakarta:
Kesaint Blanc,
2006.
Text.
Gaya MLA
Practical english conversation.
.
Jakarta:
Kesaint Blanc,
2006.
Text.
Gaya Turabian
Practical english conversation.
Jakarta:
Kesaint Blanc,
2006.
Print.