Rintanalert, Chananun, Wichitra Srison, and Sunthan Chayayanon. 2021. “Co-Operation Model in Gem and Jewelry Industrial Development in ASEAN Group of Countries A Case Study of Thai-Cambodia”. Journal of Humanities and Social Sciences Thonburi University 15 (3):132-42. https://so03.tci-thaijo.org/index.php/trujournal/article/view/249261.