Jolles, R. L. (2017). How to run seminars and workshops: Presentation skills for consultants, trainers, teachers, and salespeople (Fourth edition.). Wiley.
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Chicago Style (17th ed.) Zitazioa
Jolles, Robert L. How to Run Seminars and Workshops: Presentation Skills for Consultants, Trainers, Teachers, and Salespeople. Fourth edition. Hoboken, New Jersey: Wiley, 2017.
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MLA (9th ed.) Zitazioa
Jolles, Robert L. How to Run Seminars and Workshops: Presentation Skills for Consultants, Trainers, Teachers, and Salespeople. Fourth edition. Wiley, 2017.
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