Naritoom, C., Simsiriwong, K., Castella, J.-C., Trebuil, G., Saritniran, P. and Jantrprasert, J. (1991) “On-Farm Diagnosis on the Intensification of Vegetable Cropping System for Exports to Improve the Sustainability of Small-Scale Farming Systems in Kamphaengsaen Area”, Kasetsart Journal of Social Sciences, 12(2), pp. 118–127. available at: https://so04.tci-thaijo.org/index.php/kjss/article/view/244001 (accessed: 13 September 2026).