Muliawati, Nindya Tri, et al. “Eco-Friendly Ultrasound-Assisted Synthesis of Silver Nanoparticles Mediated by Tea Leaf Extracts and Their Potential Applications”. Hydrogen: Jurnal Kependidikan Kimia, vol. 13, no. 5, Nov. 2025, pp. 951-6, doi:10.33394/hjkk.v13i5.18213.