ASTUTI, R. D.; GANDANA, W. E. .; PUJIYANTO, E. .; NURBI, R. S. . Proposed Design Of Toy To Optimize The Brain Development Of Children Aged 3-5 Years Old. Spektrum Industri, [S. l.], v. 20, n. 1, p. 11–18, 2022. DOI: 10.12928/si.v20i1.14. Disponível em: http://journal3.uad.ac.id/index.php/spektrum/article/view/14. Acesso em: 10 jun. 2023.