- Foundations of Mixed Methods Research: Integrating Quantitative and Qualitative Techniques in the Social and Behavioral Sciences
- Mixed Methodology: Combining Qualitative and Quantitative Approaches (Applied Social Research Methods)
- Sage Handbook of Mixed Methods in Social & Behavioral Research
- World Class Schools: International Perspectives on School Effectiveness
- Schools Make a Difference: Lessons Learned from a Ten-year Study of School Effects