N. S. Dissanayake, P. H. Pupulewatte, and D. T. Jayawardana, “Formulation and Evaluation of a Laterite Soil Based Scrubbing Effect Herbal Cleansing Bar”, J. Drug Delivery Ther., vol. 12, no. 1-S, pp. 91–96, Feb. 2022, doi: 10.22270/jddt.v12i1-S.5334.