Martorell Ypiens, Jose Luis, and Miguel Ángel Carrasco. “Psychological Intervention from Spanish Distance National University: The Psychological Service (SPA)”. Acción Psicológica 6, no. 1 (June 11, 2012): 135–143. Accessed December 5, 2023. https://revistas.uned.es/index.php/accionpsicologica/article/view/452.