S. S. Anugragha, and Dr. E. Sambasivan. “A Study on Effectiveness of Promotional Strategies towards Relationship Marketing in Super Markets of Top Four Cities in Tamil Nadu”. International Journal of Management Studies (IJMS) 5, no. 1(4) (October 23, 2021): 84–89. Accessed July 14, 2025. https://researchersworld.com/index.php/ijms/article/view/1682.