1. Crootty, Michael. 1998. The foundation of Social Research, Ausralia: Allen and Unwin.
2. Cartwright Nancy and Montuschi Eleonora. 2014. Philosophy of Social Science, A New Introduction. United Kingdom: Oxford University Press.
3. Wiatr, Jerzy J. 1979. Polish essays in the methodology of the social sciences. (Boston studies in the philosophy of science; v. 29), Holland: D. Reidel Publishing Company.
4. Rajat Acharyya and Nandan Bhattacharya (edited). 2020. Research methodology for social sciences (Contemporary Issues in Social Science Research), London & New York: Routldge.
5. Chakraborty Achin. 2020. Methodological or episetomological issues in social research in: Research methodology for social sciences (Contemporary Issues in Social Science Research). London & New York: Routldge.
6. Creswell, John W & J. David Creswell. 2018 .Research Design: Qualitative, Quantitative, and Mixed Methods Approaches. Fifth edition. Los Angeles: SAGE.
7. Neuman, W. Lawrence. 2014. Social Research Methods: Qualitative and Quantitative Approaches. Seventh Edition. Pearson Education Ltd, Harlow, Essex, United Kingdom.