Palma-Álvarez, Raul F., et al. “Confirmatory Factor Analysis of 20-Item Toronto Alexithymia Scale in Spanish Patients With Substance Use Disorder”. Actas Españolas De Psiquiatría, vol. 50, no. 5, Sept. 2022, pp. 208-15, https://actaspsiquiatria.es/index.php/actas/article/view/1049.