Phongyuth Nualbunruang, Wanchai De-Ehnamkul, and Sanha Panichajakul. “Plant Regeneration from Callus of Soybean (Glycine Max L.)”. Agriculture and Natural Resources, vol. 28, no. 4, Dec. 1994, pp. 512-7, https://li01.tci-thaijo.org/index.php/anres/article/view/241454.