Beck, AT; Steer, RA; Kovacs, M (1985), „Hopelessness and eventual suicide: a 10-year prospective study of patients hospitalized with suicidal ideation”, American Journal of Psychiatry, 142 (5): 559—563, CiteSeerX10.1.1.462.6328, PMID3985195, doi:10.1176/ajp.142.5.559
Beck, AT; Weissman, A; Lester, D; Trexler, L (1974), „The measurement of pessimism: the hopelessness scale”, Journal of Consulting and Clinical Psychology, Journal of Consulting and Clinical, 42 (6): 861—5, PMID4436473, doi:10.1037/h0037562
Beck, AT; Steer, RA; Kovacs, M (1985), „Hopelessness and eventual suicide: a 10-year prospective study of patients hospitalized with suicidal ideation”, American Journal of Psychiatry, 142 (5): 559—563, CiteSeerX10.1.1.462.6328, PMID3985195, doi:10.1176/ajp.142.5.559
Beck, AT; Weissman, A; Lester, D; Trexler, L (1974), „The measurement of pessimism: the hopelessness scale”, Journal of Consulting and Clinical Psychology, Journal of Consulting and Clinical, 42 (6): 861—5, PMID4436473, doi:10.1037/h0037562
Beck, AT; Steer, RA; Kovacs, M (1985), „Hopelessness and eventual suicide: a 10-year prospective study of patients hospitalized with suicidal ideation”, American Journal of Psychiatry, 142 (5): 559—563, CiteSeerX10.1.1.462.6328, PMID3985195, doi:10.1176/ajp.142.5.559
Beck, AT; Steer, RA; Kovacs, M (1985), „Hopelessness and eventual suicide: a 10-year prospective study of patients hospitalized with suicidal ideation”, American Journal of Psychiatry, 142 (5): 559—563, CiteSeerX10.1.1.462.6328, PMID3985195, doi:10.1176/ajp.142.5.559