1. Achenbach, T. M. (1991). Manual for the child behavior checklist and 1991 child behavior profile. Burlington, VT: University of Vermont, Department of Psychiatry.
2. Achenbach, T. M. (2000). Assessment of psychopathology. In A. J. Sameroff, M. Lewis, & S. M. Miller (Eds.), Handbook of developmental psychopathology (2nd ed., pp. 41–56). New York: Plenum.
3. Ainsworth, M. D. S. (1973). The development of infant-mother attachment. In B. M. Caldwell & H. N. Rissiuti (Eds.), Review of child development research (Vol. 3, pp. 1–95). Chicago: University of Chicago Press.
4. Ainsworth, M. D. S. (1989). Attachment beyond infancy. American Psychologist, 44, 709–716.
5. Allport, F. H., & Allport, G. W. (1921). Personality traits: Their classification and measurement. Journal of Abnormal Psychology and Social Psychology, 16, 6–40.