1. Alexander, W. Astin Lori J. Vogelgesang Elaine K. Ikeda Jennifer A. Yee. (2000). How Service Learning Affects Students. Higher Education Research Institute University of California, Los Angeles.
2. Student involvement: A developmental theory for higher education.;A. W.Astin;Journal of College Student Development,1999
3. AstinA. W.VogelgesangL. J.MisaK.AndersonJ.DensonN.JayakumarU.YamamuraE. (2006). Understanding the effects of service-learning: A study of students and faculty. UCLA, Higher Education Research Institute.
4. Service-learning and Higher Education: Evaluating Students Learning Process form their Own Percpective
5. A service-learning curriculum for faculty.;R.Bringle;Michigan Journal of Community Service Learning,1995