Keadtidumrongkul, Pornthep, Nawannaporn Chirarat, and Sophana Somran. “Determination of LD50 of Ethidium Bromide for Induction of Mutation in Marigolds”. Asian Health, Science and Technology Reports 26, no. 4 (November 15, 2018): 80–88. accessed December 11, 2025. https://ph03.tci-thaijo.org/index.php/ahstr/article/view/1626.