1. Problem-based compared with traditional methods at the Faculty of Medical Sciences, University of the West Indies: a model study
2. Amador J. Miles L. & Peters C. (2006). The practice of problem-based learning: A guide to implementing PBL in the college classroom. Bolton MA: Anker.
3. American Speech-Language-Hearing Association. (2010). Code of ethics (Ethics). Retrieved from www.asha. org/policy
4. Anderson J. R. (1980). Cognitive psychology and its implications. New York NY: Freeman.
5. Aronson A. E. (1999). Muscle tension dysphonia and circumlaryngeal massage [Video]. Available from www. mentorseminars.com