Prompanat, K. “NETWORK OF FARMERS PRODUCING AND SELLING DRIED LONGAN WITHOUT MIDDLEMEN IN THE AREA OF SANPHAHEANG, MAKHUEACHAE, MUEANG DISTRICT, LAMPOON PROVINCE”. Panya, Vol. 28, no. 1, Apr. 2021, pp. 68-78, https://so06.tci-thaijo.org/index.php/panya-thjo/article/view/246965.