Thonghnoo, Chutima. “ompetitive dvantage trategies for luminum tore in hetchaburi rovince”. Journal of Management Science Nakhon Pathom Rajabhat University 7, no. 1 (June 1, 2020): 275-293. ccessed December 4, 2021. https://so03.tci-thaijo.org/index.php/JMSNPRU/article/view/244296.