1. American Institutes for Research. (2006, January 19). New study of the literacy of college students finds some are graduating with only basic skills. Retrieved January 20, 2007, from http://www.air.org/news/documents/Release200601pew.htm .
2. Baer, J., Cook, A., & Baldi, S. (2006, January). The literacy of America’s college students. American Institutes for Research. Retrieved January 20, 2007, from http://www.air.org/news/documents/The%20Literacy%20of%20Americas%20College%20Students_final%20report.pdf .
3. Berliner, D. (1990). What’s all the fuss about instructional time? In M. Ben-Peretz & R. Bromme (Eds.), The nature of time in schools: Theoretical concepts, practitioner perceptions. New York: Teachers College Press.
4. Brown, B., & Saks, D. (1986). Measuring the effects of instructional time on student learning: Evidence from the beginning teacher evaluation study. American Journal of Education, 94(4), 480–500. doi: 10.1086/443863 .
5. Cohen, P. (1981). Student ratings of instruction and student achievement. A meta-analysis of multisection validity studies. Review of Educational Research, 51(3), 281–309.