Leksuit, S. ., and P. Pituratjarurnkoon. “Development of an Organic Marketing Model of Sustainable Agriculture Network, Lamphun”. Journal of Humanities and Social Sciences Thonburi University, vol. 14, no. 2, May 2020, pp. 76-87, https://so03.tci-thaijo.org/index.php/trujournal/article/view/240208.