Harjani, C., Aditiyarini, D. and Prakasita, V. C. (2025) “COMPARATIVE pH ANALYSIS: HOMEMADE COLD CLAY VERSUS COMMERCIAL CLAY FOR CHILD SAFETY”, Jurnal Bioteknologi & Biosains Indonesia (JBBI). Indonesia, 12(2), pp. 375–381. doi: 10.55981/jbbi.2025.13507.