Maser, Jack D.; Akiskal, Hajop S. (2002). "Spectrum concepts in major mental disorders". Psychiatric Clinics of North America. 25 (4): xi–xiii. doi:10.1016/S0193-953X(02)00034-5. PMID12462854.
Maser, Jack D.; Akiskal, Hajop S. (2002). "Spectrum concepts in major mental disorders". Psychiatric Clinics of North America. 25 (4): xi–xiii. doi:10.1016/S0193-953X(02)00034-5. PMID12462854.