Toyparn, Kingkaew Toyparn. “VA-mycorrhizas in Upland Rice in the Area of Pathum Thani Rice Research Centre”. Thai Agricultural Research Journal 9, no. 2 (May 1, 1991): 113–117. accessed September 30, 2026. https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/242382.