1. Naturopathic medicine;Pizzorno,2001
2. The history of naturopathic medicine;Cody,1999
3. The nature doctors: pioneers in naturopathic medicine;Kirchfeld,1994
4. Yearbook of the International Society of Naturopathic Physicians and Emerson University Research Council,1945
5. Personal communication. National college professional survey Portland, OR, National College of Naturopathic Medicine;Tribe,2008