Howard P. Roffwarg (1979). "Diagnostic classification of sleep and arousal disorders. 1979 first edition. Association of Sleep Disorders Centers and the Association for the Psychophysiological Study of Sleep". Sleep. Cilt 2. ss. 1-154. doi:10.1093/sleep/2.1.1. PMID531417.
Howard P. Roffwarg (1979). "Diagnostic classification of sleep and arousal disorders. 1979 first edition. Association of Sleep Disorders Centers and the Association for the Psychophysiological Study of Sleep". Sleep. Cilt 2. ss. 1-154. doi:10.1093/sleep/2.1.1. PMID531417.