Harrington, D. (2009). Speaking of speech: Basic presentation skills for beginners. Macmillan Languagehouse Ltd.
استشهاد بنمط شيكاغوHarrington, David. Speaking of Speech: Basic Presentation Skills for Beginners. Macmillan Languagehouse Ltd, 2009.
MLA استشهادHarrington, David. Speaking of Speech: Basic Presentation Skills for Beginners. Macmillan Languagehouse Ltd, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.