O'Brien, E. (2015). How to make powerful speeches: A Step - by - Step Guide to Inspiring and Memorable Speeches. Ireland: The Reluctant Speakers Club.
استشهاد بنمط شيكاغوO'Brien, Eamonn. How to Make Powerful Speeches: A Step - By - Step Guide to Inspiring and Memorable Speeches. Ireland: The Reluctant Speakers Club, 2015.
MLA استشهادO'Brien, Eamonn. How to Make Powerful Speeches: A Step - By - Step Guide to Inspiring and Memorable Speeches. Ireland: The Reluctant Speakers Club, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.