References
- Klein, M. (1935). A contribution to the pathogenesis of manic depressive state. In Writings of Melanie Klein (Vol. 1, pp. 262–289). London: Hogarth.
- Klein, M. (1946). Notes on some schizoid mechanisms. In The writings of Melanie Klein (Vol. 3, pp. 1–24). London: Hogarth.