Folstein, M.F., Folstein, S.E., & McHugh, P.R. (1975). «Mini-mental state». A practical method for grading the cognitive state of patients for the clinician. Journal of Psychiatric Research, 12(3), 189-198. Recuperado a partir de http://search.ebscohost.com/login.aspx?direct=true&db=mdc&AN=1202204&site=eds-live