Going, Jonathan. 1835. The Christian Library, Vols. 3-4. p. 786+. cf.p. 803: "Now all would believe in the separate existence of the soul if they had experience of its existing apart from the body. But the facts referred to proves that it does exist apart from one body with which it once was united, and though it is in union with another, yet as it is not adherent to the same, it is shown to have an existence separate from, and independent of that body."
Henrik Lagerlund (2010). «Introduction». En Henrik Lagerlund, ed. Forming the Mind: Essays on the Internal Senses and the Mind/Body Problem from Avicenna to the Medical Enlightenment (Paperback reprint of 2007 edición). Springer Science+Business Media. p. 3. ISBN978-9048175307.
Encyclopædia Britannica. Volume 18. Edited by Hugh Chisholm.p225+253.
Robert M. Young (1996). «The mind-body problem». En RC Olby; GN Cantor; JR Christie, eds. Companion to the History of Modern Science (Paperback reprint of Routledge 1990 edición). Taylor and Francis. pp. 702-11. ISBN0415145783.
