Soleimani, Mehdi, Parvaneh Mohammadkhani, Behroz Dolatshahi, Hamid Alizadeh, Karenleigh Overmann, and Frederick Coolidge. “A Comparative Study of Group Behavioral Activation and Cognitive Therapy in Reducing Subsyndromal Anxiety and Depressive Symptoms”. Iranian Journal of Psychiatry 10, no. 2 (February 6, 2016): 71-78. Accessed June 14, 2021. https://ijps.tums.ac.ir/index.php/ijps/article/view/386.