Silvis, C. A. (2015). Presentation skills: One hour workshop. Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Silvis, Carol A. Presentation Skills: One Hour Workshop. Boston, Massachusetts: Cengage Learning, 2015.
Lua MLA (9ú heag.)Silvis, Carol A. Presentation Skills: One Hour Workshop. Cengage Learning, 2015.
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