Bautista Cárdenas, Nelly Patricia, and Deisy Hernández Forero. Citizenship-Building in Early Childhood in Vulnerable Environments: Regarding the De Cero a Siempre Strategy at Child Development Centers of the Colombian Institute for Family Welfare. Research in Psychology. Ediciones Universidad Cooperativa de Colombia, 2019. Accessed September 9, 2026. https://ediciones.ucc.edu.co/index.php/ucc/catalog/book/194.