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
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