1. Adam, K., Tomeny, M., & Oswald, I. (1986). Physiological and psychological differences between good and poor sleepers. Journal of Psychiatric Research, 20, 301–316.
2. American Sleep Disorders Association. (1990). ICSD—International classification of sleep disorders: Diagnostic and coding manual Rochester, MN: Author.
3. Berlin, R. M. (1985). Psychotherapeutic treatment of chronic insomnia. American Journal of Psychotherapy, 39, 68–74.
4. Bixler, E. O., Kales, A., Soldatos, C. R., Kales, J. D., & Healey, S. (1979). Prevalence of sleep disorders in the Los Angeles metropolitan area. American Journal of Psychiatry, 136, 1257–1262.
5. Bootzin, R. R. (1972). A stimulus control treatment for insomnia. Proceedings of the 80th Annual Convention of the American Psychological Association, 7, 395–396.