Ogle, L. T., Sen, A., Pahlke, E., Joycelyn, L., Kastberg, D., Roey, S., & Williams, T. (2003). International Comparisons in Fourth-Grade Reading Literacy: Findings from the Progress in International Reading Literacy Study (PIRLS) of 2001. Washington, DC, USA: U.S. Dept. of Education, Intitute of Education Sciences, National Center for Education.