Gaya APA
Business Communication. (2002).
:
Prentice Hall.
Gaya Chicago
Business Communication.
.
:
Prentice Hall,
2002.
CD/DVD-ROM.
Gaya MLA
Business Communication.
.
:
Prentice Hall,
2002.
CD/DVD-ROM.
Gaya Turabian
Business Communication.
:
Prentice Hall,
2002.
CD/DVD-ROM.