1. The Study of Man;Linton,1936
2. On the concepts of role status;Pierce;Sociology. Zeitschritf für Empirische Soziologie, Sozialpychologische undEthnolohische Forschung,1956
3. The Social Systems;Parsons,1951
4. Sociology and Modern Systems Theory;Buckley,1967
5. The social aspects of health and illness;Kosa,1969