1. This is Reiki: transformation of body, mind and soul from the origins to the practice;Petter,2012
2. Hands of light: a guide to healing through the human energy field;Brennan,1987
3. The spirit of Reiki: the complete handbook of the Reiki system;Lubeck,2001
4. Biofield science and healing: history, terminology, and concepts;Rubik;Glob Adv Health Med,2015
5. Foundations of Reiki Ryoho: a manual of Shoden and Okuden;Pearson,2018