Martín-Carbonell, Marta, et al. “Usefulness of the State-Trait Depression Inventory (IDERE) for Clinical Diagnosis. A Study Containing Samples from Four Iberian-American Nations”. Anales De Psicología Annals of Psychology, vol. 28, no. 3, Aug. 2012, pp. 763-71, doi:10.6018/analesps.28.3.133711.