SPRAGUE, J. (2003). The speakers handbook [ada CD]Jo Sprague, Douglas Stuart. Thomson Learning.
Lua i Stíl Chicago (17ú heag.)SPRAGUE, Jo. The Speakers Handbook [ada CD]Jo Sprague, Douglas Stuart. Thomson Learning, 2003.
Lua MLA (8ú heag.)SPRAGUE, Jo. The Speakers Handbook [ada CD]Jo Sprague, Douglas Stuart. Thomson Learning, 2003.
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