Chú thích Lo_âu

  1. ↑ Chris Scarre, Chronicle of the Roman Emperors, Thames & Hudson, 1995. pp.168-169.
  2. ↑ Seligman, M.E.P., Walker, E.F. & Rosenhan, D.L..Abnormal psychology, (4th ed.) New York: W.W. Norton & Company, Inc.
  3. ↑ Bouras, n. and Holt, G. (2007). Psychiatric and Behavioural Disorders in Intellectual and Developmental Disabilities 2nd ed. Cambridge University Press: UK.
  4. ↑ National Institute of Mental Health Retrieved ngày 3 tháng 9 năm 2008.