Wulandari, Salsa, et al. “The Effectiveness of Using the Conversion Ladder on the Critical Thinking Skills of Grade III Students at Elementary School 36 South Pontianak”. Primary: Jurnal Pendidikan Guru Sekolah Dasar, vol. 15, no. 1, Feb. 2026, pp. 27-41, https://doi.org/10.33578/jpfkip.v15i1.27-41.