Jolles, R. L. (2017). How to run seminars & workshops: Presentation skills for consultants, trainers, teachers, and salespeople (Fourth edition.). Wiley.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Jolles, Robert L. How to Run Seminars & Workshops: Presentation Skills for Consultants, Trainers, Teachers, and Salespeople. Fourth edition. Hoboken, New Jersey: Wiley, 2017.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Jolles, Robert L. How to Run Seminars & Workshops: Presentation Skills for Consultants, Trainers, Teachers, and Salespeople. Fourth edition. Wiley, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.