Guevara Guerrero, Marlenny, and Rebeca Puche Navarro. “The Emergence of Cognitive Short-Term Planning : Performance of Preschoolers in a Problem-Solving Task”. Acta Colombiana de Psicología 18, no. 2 (October 15, 2015): 13–27. Accessed September 16, 2026. https://actacolombianapsicologia.ucatolica.edu.co/article/view/111.