1. Ackermann, S. P. (1991). The benefits of summer bridge programs for underrepresented and low-income transfer students. Community/Junior College, 15(2), 211–224.
2. Allison, P. D. (2002). Missing data. Thousand Oaks: Sage Publications.
3. Astin, A. W. (1993). Assessment for excellence: The philosophy and practice of assessment and evaluation in higher education. Westport: Oryx Press.
4. Bensimon, E. M. (2007). The underestimated significance of practitioner knowledge in the scholarship on student success. The Review of Higher Education, 30(4), 441–469.
5. Buck, C. B. (1985). Summer bridge: A residential learning experience for high risk freshmen at the University of California, San Diego. (ERIC Document Reproduction Service No. ED264462).