Teerasuwannajak, Khemarat Talerngsri, and Sittidaj Pongkijvorasin. “A Study of Maize Farmers’ Incomes and Vicious Cycle of Highland Maize Farming”. Asian Journal of Applied Economics 22, no. 1 (May 20, 2016): 51–78. Accessed April 27, 2024. https://so01.tci-thaijo.org/index.php/AEJ/article/view/57252.