Andreu, Y., Galdón, M.J., Dura, E., Ferrando, M., Murgui, S., García, A. y Ibáñez, E. 2008. Psychometric properties of the Brief Symptoms Inventory-18 (BSI-18) in a Spanish sample of outpatients with psychiatric disorders. Psicothema. 20, Número 4 (dic. 2008), 844–850.