S. López Ornat and P. Gallo, “ or Development of Language? Skinner’s ‘Verbal Behavior’ Revisited”., Span. j. psychol., vol. 7, no. 2, pp. 161–170, Oct. 2004, Accessed: Nov. 15, 2024. Available: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0404220161A