4Caplan, G. (1961). An Approach to Community Mental Health [ M ]. New York: Grune Stratton.
5Leonard, P. (1975). The Challenge of Primary Prevention. A Substantially Revised Version of an Address Given to the Annual Conference of the Association of Child Care Officers in 1969.
6Germain,C. B., Gitterman, A. (1996). The Life Model of Social Work Practice: Advances in Theory and Practice, 2nd ed [M]. New York: Columbia University Press.
