SUMARNI, SRI, et al. “THE EFFECT OF ROSELLA FLOWER EXTRACT (HIBISCUS SABDARIFFA. LINN) INCREASE ON ERYTHROCYTE LEVELS IN ANEMIC TEENAGERS”. International Journal of Applied Pharmaceutics, vol. 14, no. 1, Feb. 2022, pp. 8-11, doi:10.22159/ijap.2022.v14s1.03.