Gaya APA
Complete office english. (2008).
Jakarta:
Kesaint Blanc.
Gaya Chicago
Complete office english.
.
Jakarta:
Kesaint Blanc,
2008.
Text.
Gaya MLA
Complete office english.
.
Jakarta:
Kesaint Blanc,
2008.
Text.
Gaya Turabian
Complete office english.
Jakarta:
Kesaint Blanc,
2008.
Print.