Andrade-González, N., & Fernández-Liria, A. (2015). Spanish Adaptation of the Working Alliance Inventory (WAI). Psychometric properties of the patient and therapist forms (WAI-P and WAI-T). Anales De Psicología Annals of Psychology, 31(2), 524–533. https://doi.org/10.6018/analesps.31.2.177961