Collado Mateo, M.J., Díaz-Morales, J.F., Escribano Barreno, C., Delgado Prieto, P. y Randler, C. 2012. Morningness-eveningness and sleep habits among adolescents:age and gender differences. Psicothema. 24, Número 3 (dic. 2012), 410–415.