เล็กเลอสินธุ์ เ., and ลือชัย ไ. “Communication Role of the Community Leaders on Creation of Sufficiency Economy Knowledge in Padad District, Chiang Rai Province”. SIAM COMMUNICATION REVIEW, vol. 16, no. 21, Dec. 2017, pp. 147-56, https://so05.tci-thaijo.org/index.php/commartsreviewsiamu/article/view/172006.