1. Qualitative Research Methods for the Social Sciences;Berg,2001
2. Well-being of caregivers of spouses with Parkinson's disease;Berry;Clinical Nursing Research,1995
3. Social Support and Health;Cohen,1985
4. Remembering emotional events;Christianson;Cognition and Emotion,1991
5. Content analysis;Downe-Wanboldt;Health Care for Women International,1992