Whitehurst, G. J., & Zimmerman, B. J. (1979). The functions of language and cognition. Academic Press.
Chicago-čujuhus (17. p.)Whitehurst, Grover J., juo Barry J. Zimmerman. The Functions of Language and Cognition. Nueva York: Academic Press, 1979.
MLA-čujuhus (9. p.)Whitehurst, Grover J., juo Barry J. Zimmerman. The Functions of Language and Cognition. Academic Press, 1979.
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