Gaya APA
Guffey, Mary Ellen. (2008).
Business Communication: Process & Product, 6th edition (6).
USA:
Cengage Learning.
Gaya Chicago
Guffey, Mary Ellen.
Business Communication: Process & Product, 6th edition.
6
USA:
Cengage Learning,
2008.
.
Gaya MLA
Guffey, Mary Ellen.
Business Communication: Process & Product, 6th edition.
6
USA:
Cengage Learning,
2008.
.
Gaya Turabian
Guffey, Mary Ellen.
Business Communication: Process & Product, 6th edition.
6
USA:
Cengage Learning,
2008.
.