Chaveerach, A., P. Mokkamul, R. Sudmoon, and T. Tanee. “Ethnobotany of the Genus <i>Piper</i≫ (Piperaceae) in Thailand”. Ethnobotany Research and Applications, vol. 4, Dec. 2006, pp. 223-31, https://ethnobotanyjournal.org/index.php/era/article/view/116.