Mephokee, Chanin, Tananat Roopsom, and Chotipat Klinsukhon. “Development of Trade and Investment Cooperation in Greater Mekong Sub-region: Thailand, Lao PDR, Vietnam, and Cambodia”. Thai Journal of East Asian Studies 19, no. 2 (March 1, 2015): 1–23. accessed December 9, 2025. https://so02.tci-thaijo.org/index.php/easttu/article/view/50397.