Gibson, K. R., & Parker, S. T. (1990). "Language" and intelligence in monkeys and apes: Comparative developmental perspectives. Cambridge University Press.
Chicago-viite (17. p.)Gibson, Kathleen Rita, ja Sue Taylor Parker. "Language" and Intelligence in Monkeys and Apes: Comparative Developmental Perspectives. Cambridge [England]: Cambridge University Press, 1990.
MLA-viite (9. p.)Gibson, Kathleen Rita, ja Sue Taylor Parker. "Language" and Intelligence in Monkeys and Apes: Comparative Developmental Perspectives. Cambridge University Press, 1990.
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