1. Research design: qualitative, quantitative, and mixed methods approaches Creswell, John W., Los Angeles, California ; SAGE Publications, Inc., [2023] SW510 PSY510 CP607 SOC221
2. Single-case research designs: methods for clinical and applied settings Kazdin, Alan E. New York ; Oxford University Press, 2011. CP607
3. Single-case research design and analysis: new directions for psychology and education London : Routledge, Taylor & Francis Group, 2015. CP607
