Amirullah, G., I. Yatri, and T. Handayani. “Social Return on Investment of a Literacy and Numeracy Program in Ketapang Regency Indonesia”. Kognisi : Jurnal Penelitian Pendidikan Sekolah Dasar, vol. 6, no. 1, Sept. 2026, pp. 38-47, doi:10.56393/kognisi.v6i1.4228.