Dan Burton, David Grandy: Magic, Mystery, and Science: The Occult in Western Civilization. Indiana University Press, 2004. ISBN 0253216567. Teoksen verkkoversio (viitattu 22.11.2017). en
Brian Clegg: Extra Sensory: The Science and Pseudoscience of Telepathy and Other Powers of the Mind. St. Martin's Press, 2013-05-21. ISBN 9781250031686. Teoksen verkkoversio (viitattu 22.11.2017). en
Jonathan C. Smith: Pseudoscience and Extraordinary Claims of the Paranormal: A Critical Thinker's Toolkit. John Wiley & Sons, 2011-09-26. ISBN 9781444358940. Teoksen verkkoversio (viitattu 22.11.2017). en