Gaya APA
Business english eps 1 s/d 5. (2006).
:
Emperor edutainment.
Gaya Chicago
Business english eps 1 s/d 5.
.
:
Emperor edutainment,
2006.
.
Gaya MLA
Business english eps 1 s/d 5.
.
:
Emperor edutainment,
2006.
.
Gaya Turabian
Business english eps 1 s/d 5.
:
Emperor edutainment,
2006.
.