Sari, R. F. and Nugroho, P. B. (2026) “Influence of Busy Book Media on Learning Outcomes of Students with Intellectual Disabilities in Addition Operation”, Kognitif: Jurnal Riset HOTS Pendidikan Matematika, 6(2), pp. 807–819. doi: 10.51574/kognitif.v6i2.4631.