Arnida, Arnida, et al. “Standardization of Simplicia and Ethanol Extract of Purun Danau (Lepironia Articulata (Retz.) Domin) Rhizome: Array”. Borneo Journal of Pharmacy, vol. 4, no. 4, Nov. 2021, pp. 273-82, doi:10.33084/bjop.v4i4.2794.