Rojas de la Puente, Edward Enrique. “THE LAUGHTER, SOCIAL REGULATOR OF EMOTIONAL STATES AND FIXING OF LEARNING”. Scientific Journal of Polonia University 30, no. 5 (October 29, 2018): 114-120. Accessed July 17, 2024. http://pnap.ap.edu.pl/index.php/pnap/article/view/301.