Hanpakdeesakul, Sayomphoo, Nantharat Bunnag, and Teeravut Suthiprabha. “Service Factors from Entrepreneurs’ View of Gem and Jewelry Business in Chanthaburi Province”. Asia Social Issues 18, no. 4 (May 16, 2025): e269787. accessed December 6, 2025. https://so06.tci-thaijo.org/index.php/asi/article/view/269787.