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2. Astin, A. W. (1993a). What matters in college?: Four critical years revisited. San Francisco, CA: Jossey-Bass.
3. Astin, A. W. (1993b). Assessment for excellence: The philosophy and practice of assessment and evaluation in higher education. Phoenix, AZ: Oryx Press.
4. Astin, A. W. (2002, November 5). Why spirituality should be a legitimate concern for higher education? Keynote address presented at the conference Spirituality as a Legitimate Concern in Higher Education. SUNY, Buffalo.
5. Astin, A. W. (2004, Spring). Why spirituality deserves a central place in liberal education. Liberal Education, 90, 34–41.