Savkatovich, Damir Ergashev, and Frestika Dwinanda Situmeang. “Classroom Loudness Among Children Aged 10–12 and the ZPD-ZQR Framework: A Single-Case Reflective Qualitative Study”. Lentera : Jurnal Kajian Bidang Pendidikan dan Pembelajaran 6, no. 1 (May 19, 2026): 10–18. Accessed June 2, 2026. https://journal.actual-insight.com/index.php/lentera/article/view/4225.