1. Berry M. The history and evolution of sex therapy and its relationship to psychoanalysis. Int J Appl Psychoanal Stud. 2013;10(1):53–74.
2. Levine S. The first principle of clinical sexuality. J Sex Med. 2007;4:853–4.
3. Perelman M. The sexual tipping point: a mind/body model for sexual medicine. J Sex Med. 2009;6(3):629–32.
4. Levine S. Psychological intimacy: the pathway to love. In: Levine S, editor. Demystifying love: plain talk for the mental health professional. New York: Routledge; 2006.
5. Kleinplatz P. Lessons from great lovers. In: Levine SR, Levine SR, editors. Handbook of clinical sexuality for mental health professionals. 2nd ed. New York: Routledge; 2010. p. 57–72.