Reference
- Freud, S. (1912). On the Universal Tendency to Debasement in the Sphere of Love (Contributions to the Psychology of Love: II). In S. Freud & J. E. Strachey (Eds.), The Standard Edition of the Complete Psychological Works of Sigmund Freud (Vol. 11, pp. 177–190). London: Hogarth Press, ( 1950–74).