1. Crossing the finish line;Bowen,2009
2. Burns, K.N. (1963). A study of the role that reading plays in the educational experience of a group of students at Michigan State University (Unpublished doctoral dissertation). Michigan State University.
3. Group differences in standardized testing and social stratification (College Board Report No. 99-5);Camara,1999
4. Fernald, J. (2001). Findings on the relationship between SAT scores, high school GPA, socio-economic status, and UCSC freshman GPA. Institutional Research and Policy Studies, University of California-Santa Cruz.
5. Fraenkel, J.R. & Wallen, N.E. (2008). How to design and evaluate research in education, McGraw Hill Higher Education, USA.