Djayasinga, R. ., S. . Sumardi, W. . Simanjuntak, S. . Hadi, M. . Sugiarti, and R. T. . Mangapul Situmeang. “SYNTHESIS OF CALCIUM OXIDE UTILIZING CHICKEN EGGSHELL WASTE VIA A FOAM-FREE APPROACH”. Seminar Nasional Humaniora Dan Aplikasi Teknologi Informasi (SEHATI), vol. 10, no. 1, Oct. 2024, pp. 1-7, https://prosiding.uim.ac.id/index.php/sehati/article/view/478.