Suteeweerakajorn, Worawut. 2019. “A QUALIFICATION OF PREMIUM CRAFTSMANSHIP PRODUCTS FOR A SPECIFIC TARGET GROUP”. Phranakhon Rajabhat Research Journal : Humanities and Social Sciences 15 (1):313-25. https://so05.tci-thaijo.org/index.php/PNRU_JHSS/article/view/201881.