Masaunjik, N., P. Yangkham, P. Ruksasri, K. Wanichkittikul, and A. Chalermchit. “Wellness Tourism Innovation Management on Sustainable in the North Eastern of Thailand”. Journal for Developing the Social and Community, vol. 7, no. 2, Dec. 2020, pp. 493-08, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/229593.