Bootcharee, A., and G. Lowatcharin. “An Evaluation of the ‘Nawatwithi OTOP’ Community Tourism in Sakon Nakhon Province”. Academic Journal of Mahamakut Buddhist University Roi Et Campus, vol. 10, no. 1, July 2020, pp. 449-61, https://so01.tci-thaijo.org/index.php/AJMBU/article/view/241921.