トランス (意識)
Inglis, Brian (1990). Trance: A Natural History Of Altered States Of Mind. London, Paladin. ISBN 0-586-08933-0
Wier, Dennis R.(1995) Trance: from magic to technology, ISBN 1-888428-38-4
Warren, Jeff (2007). "The Trance". The Head Trip: Adventures on the Wheel of Consciousness., Random House Canada. ISBN 978-0679314080.
Taves, Ann (1999). Fits, Trances, & Visions: Experiencing Religion and Explaining Experience from Wesley to James., Princeton University Press.