APA-viite (7. p.)
Parker, S. T., & McKinney, M. L. (1999). Origins of intelligence: The evolution of cognitive development in monkeys, apes, and humans. Johns Hopkins University Press.
Chicago-viite (17. p.)
Parker, Sue Taylor, ja Michael L. McKinney. Origins of Intelligence: The Evolution of Cognitive Development in Monkeys, Apes, and Humans. Baltimore, Md.: Johns Hopkins University Press, 1999.
MLA-viite (9. p.)
Parker, Sue Taylor, ja Michael L. McKinney. Origins of Intelligence: The Evolution of Cognitive Development in Monkeys, Apes, and Humans. Johns Hopkins University Press, 1999.
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