López Ramírez , G. J. . “THE TEMPORAL-SPATIAL DIDACTIC RESOURCES IN THE TEACHING-LEARNING PROCESS OF HISTORY”. Didáctica Y Educación ISSN 2224-2643, vol. 4, no. 4, Oct. 2013, pp. 111-24, https://revistas.ult.edu.cu/index.php/didascalia/article/view/198.