1. Hopelessness depression: A theory-based subtype of depression;Abramson;Psychological Review,1989
2. Multiple regression;Aiken,1991
3. Internal–external locus of control and response to influence attempts;Biondo;Journal of Personality,1971
4. Psychosocial models of the role of social support in the etiology of physical disease;Cohen;Health Psychology, 1988,1988
5. Social support and health;Cohen,1985