R. Jayantini, D. F. Suniarti, and A. T. Sarwono, “EFFICACY OF A STANDARDIZED ETHANOL EXTRACT OF ROSELLE CALYX IN THE TREATMENT OF ORAL MUCOSA ULCERATION (IN VIVO)”, Asian J Pharm Clin Res, vol. 10, no. 17, pp. 183–186, Oct. 2017.