Krongkeha, Watcharacha, and Sineewan Pitaktim. 2022. “Growth inhibition of Escherichia coli and Pseudomonas aeruginosa strains by Piper betle Linn. extracts”. Journal of Current Science and Technology 12 (1):141-50. https://ph04.tci-thaijo.org/index.php/JCST/article/view/336.