Arrieta Barbosa, Armando Luis. “Space, Time and Society in Social Science Textbooks in Colombia (1990- 2010): Trends, Visions, and Concepts”. Ciencias Sociales Y Educación, vol. 3, no. 6, June 2015, pp. 43-64, https://revistas.udem.edu.co/index.php/Ciencias_Sociales/article/view/1018.