Charuplakkal, J., and R. Kumaramkandath. “The Use of Operational Definitions in Social Work PhD Theses in India”. Journal of Social Work Education and Practice, vol. 6, no. 2, Apr. 2023, pp. 31-43, https://ojs.bdtopten.com/33014.jswep/index.php/jswep/article/view/105.