1. Barr, J. W. 1986, Critical care nurses’ perceptions of caring: a phenomenological study, University Microfilms International, Michigan
2. Benner, P. 1984, From novice to expert. Addison Wesley, Menlo Park, CA
3. Benner, P. Wrubel, J. 1989, The primacy~of caring. Addison-Wesley, Menlo Park, CA
4. A retrospective study of patients’ recall of respirator treatment (1): Study design and basic findings;Berghom-Engberg;Intensive Care Nursing,1988
5. The experimental ecology of education;Brofenbrenner;Teachers’ College Record,1976