Wati, Desi Susilo, et al. “OPTIMIZATION OF BENTONITE LIQUID DETERGENT FOR CLEANSING OF EXTREME NAJS USING SIMPLEX LATTICE DESIGN”. International Journal of Applied Pharmaceutics, vol. 11, no. 1, Jan. 2019, pp. 186-90, doi:10.22159/ijap.2019v11i1.30367.