CHRISTANTI, Ana; PURNOMO, Ryan. The Implementation of Differentiated Instruction by Certified Teacher Leaders Across Educational Tiers: A Qualitative Case Study. SELL (Scope of English Language Teaching, Linguistics, and Literature) Journal, [S. l.], v. 11, n. 2, p. 147–158, 2026. Disponível em: http://publikasi.stkippgri-bkl.ac.id/index.php/SL/article/view/1310. Acesso em: 26 aug. 2026.