Dyfyniad APA

Murphy, H. A. &. o. Effective Business Communication - 7th Ed. 2008.

Dyfyniad Arddull Chicago

Murphy, Herta A. & others. Effective Business Communication - 7th Ed. 2008.

Dyfyniad MLA

Murphy, Herta A. & others. Effective Business Communication - 7th Ed. 2008.

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