Intan, Natthida. 2021. “7Ps Marketing Strategies That Affect Changes in Local Knowledge Characteristics Case study of silk, Ban Saen Suk, Yawuk Sub-district, Chumphon Buri District Surin Province”. Journal of Modern Learning Development 6 (5):155-65. https://so06.tci-thaijo.org/index.php/jomld/article/view/249403.