Gaya APA
Simple & Easy : English For Business. (2009).
Jakata:
Visimedia.
Gaya Chicago
Simple & Easy : English For Business.
.
Jakata:
Visimedia,
2009.
Text.
Gaya MLA
Simple & Easy : English For Business.
.
Jakata:
Visimedia,
2009.
Text.
Gaya Turabian
Simple & Easy : English For Business.
Jakata:
Visimedia,
2009.
Print.