1. Suits, B.: The Grasshopper-: Games. Life and Utopia. Broadview Press, Petervorough (2014)
2. Wilhelm, R.: The Secret of the Golden Flower: A Chinese book of life. Routledge, London (2013)
3. Fincher, S.F., Johnson, R.A.: Creating Mandalas: For Insight, Healing, and Self-Expression. Shambhala, Boston (1991)
4. Malchiodi, C.A.: The Soul’s Palette: Drawing on Art’s Transformative Powers. Shambhala Publications, Boulder (2002)
5. Curry, N.A., Kasser, T.: Can coloring mandalas reduce anxiety? Art Ther. 22(2), 81–85 (2005)