SIREGAR, G. R. G.; LUBIS, M.; FUJIATI, I. I. Correlation between Breastfeeding Duration and Motor Development in Children. Sumatera Medical Journal, [S. l.], v. 1, n. 1, p. 6–10, 2018. DOI: 10.32734/sumej.v1i1.440. Disponível em: https://talenta.usu.ac.id/smj/article/view/440. Acesso em: 9 jul. 2025.