Obsuklin , C., and R. Phakdeeying. “Competieive Strategies of Artificial Grass Football Field Rental Business in Khon Kaen Province”. Journal of Modern Learning Development, vol. 9, no. 2, Feb. 2024, pp. 286-02, https://so06.tci-thaijo.org/index.php/jomld/article/view/264736.