↑ Bourguignon, Erika; Ucko, Lenora (1969). Cross-Cultural Study of Dissociational States. The Ohio State University Research Foundation with National Institute of Mental Health grant.
↑ 1981 Kehoe, Alice B., and Giletti, Dody H., Women's Preponderance in Possession Cults: The Calcium Deficiency Hypothesis Extended, American Anthropologist, New Series,. 83(3): 549–561
↑ Lewis, I.M. 1966 Spirit Possession and Deprivation Cults. Man, New Series: 1 (3): 307–329.
