Nuansara, Manote, Nampetch Teypinsai, and Chatchaya Chutinatphuwadon. “GUIDELINE FOR THE DEVELOPMENT OF OTOP AND BRAND PRODUCT TO INTERNATIONAL STANDARDS CHIANG RAI PROVINCE”. Dusit Thani College Journal 15, no. 1 (April 26, 2021): 119–134. Accessed March 28, 2024. https://so01.tci-thaijo.org/index.php/journaldtc/article/view/247433.