คำสอน ด.; ไชยรักษ์ ช. Uptake of Zinc, Lead, and Copper by Sunflower Grown in Contaminated Soil. KKU Science Journal, [S. l.], v. 41, n. 2, p. 468–475, 2013. Disponível em: https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/249141. Acesso em: 26 aug. 2026.