1. Teachers' self-esteem and self-efficacy
2. Creswell, J. W. 2009. Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. 3rd ed, 260. Thousand Oaks, CA: Sage.
3. Creswell, J. W. 2012. Educational Research: Planning, Conducting and Evaluating Quantitative and Qualitative Research. 4th ed, 673. New York, NY: Pearson.