Susantiningsih, Tiwuk, et al. “Schizonticidal Effect of a Combination of Amaranthus Spinosus L. and Andrographis Paniculata Burm. F. Nees Extracts in Plasmodium Berghei-Infected Mice”. Medical Journal of Indonesia, vol. 21, no. 2, May 2012, pp. 66-70, doi:10.13181/mji.v21i2.482.