A Weissman

Hopelessness and suicidal behavior. An overview.

A. Beck, M. Kovács, A T Beck, 1975, JAMA.

The measurement of pessimism: the hopelessness scale.

D Lester, A. Beck, D. Lester, 1974, Journal of consulting and clinical psychology.

Assessment of suicidal intention: the Scale for Suicide Ideation.

A. Beck, M. Kovács, A T Beck, 1979, Journal of consulting and clinical psychology.