1. American Psychiatric Association. (1980). Diagnostic and statistical manual of mental disorders ( 3rd ed. ). Washington, DC: Author.
2. American Psychiatric Association. (1987). Diagnostic and statistical manual of mental disorders (3rd ed., revised). Washington, DC: Author.
3. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders ( 4th ed. ). Washington, DC: Author.
4. Bellack, A. S., Mueser, K. T., Gingerich, S., & Agresta, J. (1997). Social skills training for schizophrenia: A step-by-step guide. New York: Guilford.
5. Bleuler, E. (1950). Dementia praecox or the group of schizophrenias (J. Zinken, Trans. [1911]). New York: International Universities Press.