1. National Institutes of Health. National Center on Sleep Disorder Research Plan. 2003.
2. Roller L. Treating sleep disorders. Aust J Pharm. 2002;83:443–7.
3. American Psychiatric Association. American Psychiatric Task Force on DSM-IV, Diagnostic and Statistical Manual of Mental Disorders: DSM IV. 4th ed. Washington, DC: American Psychiatric Association; 1994.
4. Grustein R. Insomnia diagnosis and management. Aust Fam Phys. 2002;31:995–1000.
5. American Academy of Sleep Medicine. The International Classification of Sleep Disorders, Revised. Diagnostic and Coding Manual. Rochester, Minn: American Academy of Sleep Medicine; 2001.