Gaya APA
English for traders & businescmen. (2006).
Jakarta:
Kesaint Blanc.
Gaya Chicago
English for traders & businescmen.
.
Jakarta:
Kesaint Blanc,
2006.
Text.
Gaya MLA
English for traders & businescmen.
.
Jakarta:
Kesaint Blanc,
2006.
Text.
Gaya Turabian
English for traders & businescmen.
Jakarta:
Kesaint Blanc,
2006.
Print.