Fitriani, L., Rahmi, U., & Ben, E. S. (2015). Formulation of Ranitidine HCl Microcapsules with Ethyl Cellulose Using a Factorial Design. Jurnal Sains Farmasi & Klinis, 1(1), 101–110. https://doi.org/10.29208/jsfk.2014.1.1.18