Gaya APA
Grolier Business Library : How to Communicate at Work. (1999).
Hongkong:
Glorier International Inc..
Gaya Chicago
Grolier Business Library : How to Communicate at Work.
ed.1.
Hongkong:
Glorier International Inc.,
1999.
.
Gaya MLA
Grolier Business Library : How to Communicate at Work.
ed.1.
Hongkong:
Glorier International Inc.,
1999.
.
Gaya Turabian
Grolier Business Library : How to Communicate at Work.
Hongkong:
Glorier International Inc.,
1999.
.