ถนอมทรัพย์ ว. “Effect of Planting Rate and Irrigation Amount on Yield and Water Use Efficiency of Soybean”. Thai Agricultural Research Journal, vol. 13, no. 1, Feb. 2020, pp. 64-71, https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/238336.