Oyebode, Femi (2015). Sims' Symptoms in the Mind: Textbook of Descriptive Psychopathology (Fifth ed.). Edinburgh; New York: Saunders/Elsevier. p. 4. ISBN978-0-7020-5556-0. OCLC878098854.
Ormel J, Laceulle OM, Jeronimus BF (2014). "Why Personality and Psychopathology Are Correlated: A Developmental Perspective Is a First Step but More Is Needed". European Journal of Personality. 28 (4): 396–98. doi:10.1002/per.1971. S2CID210187913.
Ormel J, Laceulle OM, Jeronimus BF (2014). "Why Personality and Psychopathology Are Correlated: A Developmental Perspective Is a First Step but More Is Needed". European Journal of Personality. 28 (4): 396–98. doi:10.1002/per.1971. S2CID210187913.
Oyebode, Femi (2015). Sims' Symptoms in the Mind: Textbook of Descriptive Psychopathology (Fifth ed.). Edinburgh; New York: Saunders/Elsevier. p. 4. ISBN978-0-7020-5556-0. OCLC878098854.