The spread of education in preschools (history of early childhood education in Nicaragua). Revista Humanismo y Cambio Social, [S. l.], p. 30–47, 2017. DOI: 10.5377/hcs.v0i6.3520. Disponível em: https://revistas.unan.edu.ni/index.php/Humanismo/article/view/978. Acesso em: 7 aug. 2025.