Kanjanawattana, Wijitra, and Suthasinee Phochathan. “The Comparison of Consumers’ Marketing Mix Decision in Herbal Facial Soap Purchase in Nakhon Ratchasima Province”. Journal of Management Science Nakhonratchasima University 1, no. 1 (June 29, 2022): 67–82. accessed May 10, 2025. https://so08.tci-thaijo.org/index.php/jmsnrru/article/view/194.