↑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
↑Peter Gay, Freud: A Life for Our Time (1989) str. 198