Young, S. (2006). "India". Richard Francis Burton: Explorer, Scholar, Spy. New York: Marshall Cavendish. pp. 16–26. ISBN9780761422228.
In 1852, a letter from Burton was published in The Zoist: "Remarks upon a form of Sub-mesmerism, popularly called Electro-Biology, now practised in Scinde and other Eastern Countries", The Zoist: A Journal of Cerebral Physiology & Mesmerism, and Their Applications to Human Welfare, Vol.10, No.38, (July 1852), pp.177–181.