Somboonsuke, B., and P. Phitthayaphinant. “Para-rubber Farmer’s Household Livelihoods under Para-rubber and Economic Animal Production System in Three Southern Border Provinces”. Journal of Social Sciences Naresuan University, vol. 16, no. 2, Dec. 2020, pp. 189-28, doi:10.14456/jssnu.2020.14.