Dyfyniad APA

Silvis, C. A. (2015). Presentation skills: One hour workshop. Cengage Learning.

Dyfyniad Arddull Chicago

Silvis, Carol A. Presentation Skills: One Hour Workshop. Boston, Massachusetts: Cengage Learning, 2015.

Dyfyniad MLA

Silvis, Carol A. Presentation Skills: One Hour Workshop. Cengage Learning, 2015.

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