Alireza Nazari Anamagh, Niloofar Mikaeil, S. T. S. A. M. N. “The Effectiveness of Cognitive-Behavioral Therapy in Decreasing Depression and Increasing Happiness and Life Satisfaction”. Opción, Vol. 34, no. 1, June 2019, pp. 1182-97, https://mail.produccioncientificaluz.org/index.php/opcion/article/view/24178.