Needleman, Jacob (1970). «Transcendental Meditation». The New Religions (1st edición). Garden City N.Y.: Doubleday. pp. 132–147.
Freeman, Lynda (2008). Mosby's Complementary and Alternative Medicine (3rd edición). St. Louis, Missouri: Elsevier Health Sciences. p. 533. ISBN978-0-323-02626-0. «The meditator experiences a subtle state of thought in the form of a mantra or a sound. This state is deeply relaxing and has been described as a wakeful hypometabolic physiologic state.»
Humes, C.A. (2005). «Maharishi Mahesh Yogi: Beyond the T.M. Technique». En Forsthoefel, Thomas A., ed. Gurus in America. SUNY Press. p. 69. ISBN0-7914-6573-X. «This lawsuit was the most significant setback for TM in the United States ... Since then TM has made a comeback of sorts with some governmental sponsorship».
Chryssides, George D. (2001). Exploring New Religions. Continuum International Publishing Group. pp. 301-303. ISBN9780826459596."Although one can identify the Maharishi's philosophical tradition, its teachings are in no way binding on TM practitioners. There is no public worship, no code of ethics, no scriptures to be studied, and no rites of passage that are observed, such as dietary laws, giving to the poor, or pilgrimages. In particular, there is no real TM community: practitioners do not characteristically meet together for public worship, but simply recite the mantra, as they have been taught it, not as religious obligation, but simply as a technique to benefit themselves, their surroundings and the wider world."
Phelan, Michael (1979). «Transcendental Meditation. A Revitalization of the American Civil Religion». Archives des sciences sociales des religions48 (1): 5-20. doi:10.3406/assr.1979.2186.
Travis, F; Haaga, DA; Hagelin, JS et al. (2009). «Effects of Transcendental Meditation practice on brain functioning and stress reactivity in college students». International Journal of Psychophysiology71 (2): 170-176. PMID18854202. doi:10.1016/j.ijpsycho.2008.09.007.
Travis, F; Haaga, DA; Hagelin, JS et al. (2009). «Effects of Transcendental Meditation practice on brain functioning and stress reactivity in college students». International Journal of Psychophysiology71 (2): 170-176. PMID18854202. doi:10.1016/j.ijpsycho.2008.09.007.