PREEPREMMOTE, P.; THONGNOPKUN, P.; ROUBROUMLERT, W.; MADLEE, D.; PAMOUNSUB, A.; TENGSUWAN, P. Value-Added Creation to Enhance the Income of Gem and Jewelry Businesses in Chanthaburi. NIDA Business Journal, Bangkok, Thailand, n. 30, p. 123–141, 2022. Disponível em: https://so10.tci-thaijo.org/index.php/NIDABJ/article/view/72. Acesso em: 23 sep. 2025.