Pérez, Nieves, Manuel M. Ramos, A. Reyes, Humbelina Robles, Ana García-león, and Jaime Vila. “The Aggression Questionnaire: A validation study in student samples”. The Spanish Journal of Psychology, vol. 5, vol. 5, no. 1, 2002, p. 45, https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0202120045A.