Calvo1, N., Gutiérrez, F., Andión, óscar, Caseras, X., Torrubia, R. y Casas, M. 2012. Psychometric properties of the spanish version of the self-report personality diagnostic questionnaire -4+ (PDQ-4+) in psychiatric outpatients. Psicothema. 24, Número 1 (dic. 2012), 156–160.