1. Research Methods in Education
2. CRESWELL, John W.; POTH, Cheryl N. Qualitative inquiry and research design: choosing among five approaches. 4th ed. Thousand Oaks, CA: Sage, 2018.
3. Moments, Mixed Methods, and Paradigm Dialogs
4. DENZIN, Norman K.; LINCOLN, Yvonna S. (ed.). The Sage Handbook of qualitative research. 5th ed. Thousand Oaks, CA: Sage, 2018. A book of almost 1,000 pages, widely cited, whose organizers are recognized as references in the area. It is specifically focused on the methodology of qualitative research and presents a critical perspective. It discusses, in some chapters, the relations between paradigms, theoretical framework and methodologies.
5. The Paradigm Wars and Their Aftermath A “Historical” Sketch of Research on Teaching Since 1989