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2. The ecology of leadership: Adapting to the Challengers of a changing world;Allen;The Journal of Leadership Studies,1998
3. College experiences and student learning: The influence of active learning, college environments and Co curricular activities;Anaya;Journal of College Student Development,1996
4. Student involvement: A developmental theory for higher education;Astin;Journal of College Student Personnel,1984
5. An empirical typology of college students;Astin;Journal of College Student Development,1993