1. National Sleep Foundation,2001
2. Power Sleep: The Revolutionary Program that Prepares Your Mind to Speak;Maas,1998
3. Wilkerson RC. The revival of ancient dream healing. Available at: http://www.altmed.com/resources/faqs.cfm?Article=257. Accessed October 30, 2001.
4. The Interpretation of Dreams;Freud,1965
5. Four Archetypes;Jung,1973