See Allo

Guffey, Mary Ellen, author

Essentials of business communication

PWS Publishing, 1991

Buku Teks

Guffey, Mary Ellen, author

Essentials of business communication

Cengage Learning, 2008

Multimedia

Guffey, Mary Ellen, author

Essentials of business communication

PWS-Kent, 1988

Buku Teks

Harvard business essentials : business communication

Boston : Harvard Business School Press, 2004,

Buku Teks

Guffey, Mary Ellen, author

Essentials of business communication / Mary Ellen Guffey, Bertha Du-Babcock

Cengage Learning Asia, 2008

Buku Teks

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