SUPRIADI, DADIH, et al. “CALCIUM CARBONATE ISOLATION FROM EGGSHELL TO MEET PHARMACOPOEIAL STANDARDS AND ITS EFFECTIVENESS AS AN ANTACIDS”. International Journal of Applied Pharmaceutics, vol. 15, no. 5, Sept. 2023, pp. 204-9, doi:10.22159/ijap.2023v15i5.48045.