Williams, E. J. (2008). Presentations in English: Find your voice as a presenter. Oxford: Macmillan.
استشهاد بنمط شيكاغوWilliams, Erica J. Presentations in English: Find Your Voice As a Presenter. Oxford: Macmillan, 2008.
MLA استشهادWilliams, Erica J. Presentations in English: Find Your Voice As a Presenter. Oxford: Macmillan, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.