1. Setting educational goals: Toward learning we can live with;Ayim,1988
2. Taxonomy of educational objectives: Cognitive and affective domains,1972
3. Empathy and ego development;Carlozzi;Journal of Counselling Psychology,1983
4. Psychology teaching and lifelong learning;Chickering,1980
5. The older college student. A changing American tradition;Epstein;International Journal of Lifelong Education,1986