1. Pathological Mourning and Childhood Mourning
2. Freud, S. (1908), Creative writers and day-dreaming, Standard Edition, Vol. XII, Hogarth Press, London, 1955, pp. 143–153.
3. The Childhood of the Artist
4. Klein, M. (1940), in Introduction to the Work of Melanie Klein, H. Segal, Ed. Basic Books, New York, 1973, p. 92.