Kaewkanya, K., K. Soontarote, A. Lulitanond, A. Sangka, N. Charoensri, and P. Sribenjalux. “lation of Clostridium botulinum from soil samples in Northeastern Thailand by Clostridium botulinum isolation Agar”. Archives of Allied Health Sciences, vol. 18, no. 3, Oct. 2006, pp. 37-44, https://he01.tci-thaijo.org/index.php/ams/article/view/66061.