Uyub, ABD M. 2010. “Invitro Anti-Metronidazole-Resistant-Helicobacter Pylori Activity and Cytotoxicity of Selected Medicinal plants’ Extracts from Penang Island Malaysia”. Ethnobotany Research and Applications 8 (May):095-106. https://ethnobotanyjournal.org/index.php/era/article/view/446.