Thanomsub, Wanchai. “Responses of Soybean to Irrigation Amounts and Plant Arrangements”. Thai Agricultural Research Journal 15, no. 2 (March 23, 1997): 105–119. accessed September 30, 2026. https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/236556.