Charlena, I. H. Suparto, and D. P. O. Laia. “Synthesis and Characterization of Hydroxyapatite from Polymesoda Placans Shell Using Wet Precipitation Method”. JURNAL BIOS LOGOS, vol. 13, no. 1, Feb. 2023, pp. 85-96, doi:10.35799/jbl.v13i1.47454.