Details recorded in: Akhtar, Salman (1987). "Schizoid Personality Disorder: A Synthesis of Developmental, Dynamic, and Descriptive Features". American Journal of Psychotherapy. 41 (4): 499–518. doi:10.1176/appi.psychotherapy.1987.41.4.499. PMID3324773.
Fusar-Poli, Paolo; Politi, Pierluigi (2008). "Paul Eugen Bleuler and the Birth of Schizophrenia (1908)". American Journal of Psychiatry. 165 (11): 1407. doi:10.1176/appi.ajp.2008.08050714. PMID18981075.
Details recorded in: Akhtar, Salman (1987). "Schizoid Personality Disorder: A Synthesis of Developmental, Dynamic, and Descriptive Features". American Journal of Psychotherapy. 41 (4): 499–518. doi:10.1176/appi.psychotherapy.1987.41.4.499. PMID3324773.
Fusar-Poli, Paolo; Politi, Pierluigi (2008). "Paul Eugen Bleuler and the Birth of Schizophrenia (1908)". American Journal of Psychiatry. 165 (11): 1407. doi:10.1176/appi.ajp.2008.08050714. PMID18981075.
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Gregory, Richard L. (2004). The Oxford companion to the mind (2nd ed.). Oxford: Oxford University Press. p. 697. ISBN0198662246. OCLC56627645.
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