Ngerndee, Chamnan, and Natha Thornjareankul. 2021. “Factors Affecting Logistic Costs for Manufacturers in Samutprakarn Province”. Journal of Humanities and Social Sciences Thonburi University 16 (1):140-51. https://so03.tci-thaijo.org/index.php/trujournal/article/view/253680.