Dyfyniad APA

MM. (1991). Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing.

Dyfyniad Arddull Chicago

MM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.

Dyfyniad MLA

MM. Essentials Of Business Communication / Mary Ellen Guffey. PWS-Kent Publishing, 1991.

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