1. Edelman, G.M. (1992) Bright, Air, Brilliant Fire. On the Matter of the Mind, Basic Books, New York.
2. Damasio, A.R. (1994) The Feeling of What Happens; Bodz and Emotions and the Making of Consciousness. Harcourt Brace, New York.
3. Freud, S. (1954) The Origins of Psycho-Analysis. Basic Books Inc., New York, p. 323.
4. Freud, A. (1998) Selected Writings. Penguin Classics. Great Britain by Clays Ltd. Elcograf S.P.A.
5. American Psychiatric Association (2023) American Psychiatric Association Publishing, Washington DC.