Carroll, Robert Todd (2003). The Skeptic's Dictionary: A Collection of Strange Beliefs, Amusing Deceptions, and Dangerous Delusions. Hoboken, New Jersey: Wiley. p. 198. ISBN9780471272427. «Levitation is the act of ascending into the air and floating in apparent defiance of gravity. Spiritual masters or fakirs are often depicted levitating. Some take the ability to levitate as a sign of blessedness. Others see levitation as a conjurer's trick. No one really levitates; they just appear to do so. Clever people can use illusion, "invisible string", and magnets to make things appear to levitate.»
Nickell, Joe (2005). Camera Clues: A Handbook for Photographic Investigation. Lexington: University Press of Kentucky. p. 177. ISBN9780813191249. «Some claims — of levitation, for instance — may be performed either as an illusion for an audience, as a magician's stage trick, or for the camera.»
Smith, F. B. (1 de enero de 1986). «Review of The Enigma of Daniel Home: Medium or Fraud?; The Spiritualists: The Passion for the Occult in the Nineteenth and Twentieth Centuries; The Other World: Spiritualism and Psychical Research in England, 1850–1914». Victorian Studies29 (4): 613-614. JSTOR3828547.
medievalists.net
Reda, Mario; Saco, Giuseppe (28 de enero de 2010). «Anorexia and the Holiness of Saint Catherine of Siena». Medievalists(en inglés estadounidense). Journal of Criminal Justice and Popular Culture vol. 8 Issue 1. Consultado el 2 de mayo de 2023.
