Dyfyniad APA

 Hasling, J. (2006).  The audience, the message, the speaker.  McGraw-Hil Higher Education.

Dyfyniad Arddull Chicago

 Hasling, John.  The Audience, the Message, the Speaker.  McGraw-Hil Higher Education, 2006.

Dyfyniad MLA

 Hasling, John.  The Audience, the Message, the Speaker.  McGraw-Hil Higher Education, 2006.

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