Gaya APA
GUFFEY,Mary Ellen. (2003).
Business Communication: Process and product (4th ed).
Australia:
Thomson.
Gaya Chicago
GUFFEY,Mary Ellen.
Business Communication: Process and product.
4th ed
Australia:
Thomson,
2003.
Monograf.
Gaya MLA
GUFFEY,Mary Ellen.
Business Communication: Process and product.
4th ed
Australia:
Thomson,
2003.
Monograf.
Gaya Turabian
GUFFEY,Mary Ellen.
Business Communication: Process and product.
4th ed
Australia:
Thomson,
2003.
Monograf.