Chaiwatanasin, W., Chantsavang, S. and Triwutanon, O. (1998) “Effect of Supplemented with Microbial Medicinal Plant Extract in Broiler Drinking Water”, Agriculture and Natural Resources. Bangkok, Thailand, 32(3), pp. 285–291. available at: https://li01.tci-thaijo.org/index.php/anres/article/view/240577 (accessed: 17 September 2026).