Poonsamran, P., A. Piancharoenwong, and W. Rittiboonchai. “The Influences of Service Marketing Mixture on Customer Satisfaction on Car Care Business in Nakhon Pathom Province”. Doctor of Philosophy in Social Sciences Journal, vol. 2, no. 1, Apr. 2023, pp. 26-38, https://so08.tci-thaijo.org/index.php/dpssj/article/view/1569.