Akhtar, N.,& Tomasello, M.(1996). Twenty-four months old children learn words for absent objects and actions. British Journal of Developmental Psychology, 14, 79-93.
American Psychiatric Association.(1994). Diagnostic and statistical manual of mental disorder (4th ed.)(DSM-IV). Author, Washington, DC.
Baron-Cohen, S., Leslie, A. M.,& Frith, U.(1985). Does the autistic child have a ‘theory of mind’? Cognition, 21, 37-46.
Clark, E. V.(1976). From gesture to word: On the natural history of deixis in language acquisition. In J. S. Bruner,& A. Garton (Eds.), Human growth and development (pp. 1-38). Wolfson College Lecture, Oxford: Oxford University Press.
Clark, H., Schreuder, R.,& Buttrick, S.(1983). Common ground and the understanding of demonstrative reference. Journal of Verbal Learning and Verbal Behavior, 22, 245-258.