Nakaray, Preeda, Chanida Rodyoo, and Panjaporn Kuenui. 2020. “Assessment of the Tourism Potential of Nopphitam District Based on Community-Based Tourism Standard”. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences 40 (2):118-31. https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/240435.