Bunnak, Apisit, and Srisunan Prasertsang. 2021. “Value Chain Management Affecting Business Success: A Case Study of Small and Medium Construction Material Retailer in Roi-Kaen-Sarn-Sin Cluster”. Journal of Roi Et Rajabhat University 15 (1):122-36. https://so03.tci-thaijo.org/index.php/reru/article/view/242177.