1. Bandler, R., & Grinder, J.The structure of magic I: A book about language and therapy. Palo Alto: Science and Behaviour Books, 1975.
2. Beck, A. T.Cognitive therapy and the emotional disorders. New York: International Universities Press, 1976.
3. Collins, A. M., & Quillian, M. R. Retrieval time for semantic memory.Journal of Verbal Learning and Verbal Behavior 1969,8 240?247.
4. Ellis, A.Reason and emotion psychotherapy. Secaucus, New Jersey: Citadel Press, 1962.
5. Finely, J. R., & Staats, A. W. Evaluative meaning words as reinforcement stimuli.Journal of Verbal Learning and Verbal Behavior 1967,6 193?197.