Gaya APA
Guffey, Mary Ellen, Du-Babcock Bertha. (2010).
Essentials of Business Communication (2).
Singapore:
Cengage Learning.
Gaya Chicago
Guffey, Mary Ellen, Du-Babcock Bertha.
Essentials of Business Communication.
2
Singapore:
Cengage Learning,
2010.
Texts.
Gaya MLA
Guffey, Mary Ellen, Du-Babcock Bertha.
Essentials of Business Communication.
2
Singapore:
Cengage Learning,
2010.
Texts.
Gaya Turabian
Guffey, Mary Ellen, Du-Babcock Bertha.
Essentials of Business Communication.
2
Singapore:
Cengage Learning,
2010.
Texts.