1. Adyashanti. (2004). Emptiness dancing. Boulder, CO: Sounds True.
2. Almaas, A. (2001). The point of existence: Transformations of narcissism in self-realization. Boston: Shambhala.
3. Almaas, A. (2008). The unfolding now: Realizing your true nature through the practice of presence. Boston: Shambhala.
4. Assagiolo, R. (1973). Psychosynthesis. New York: Hobbs, Dorman.
5. Beck, D., & Cowan, C. (1996). Spiral dynamics: Mastering values, leadership, and change. Cambridge, MA: Blackwell Publishers.