M. C. Vivek and S. Sahana, “Green Marketing: An Analysis of Consumer’s Perception and Willingness to Pay”, Indian J Ext Edu, vol. 57, no. 4, pp. 153–155, Sep. 2021, Accessed: Jul. 15, 2026. [Online]. Available: https://epubs.icar.org.in/index.php/IJEE/article/view/115543