APA (7th ed.) Citation

Whitehurst, G. J., & Zimmerman, B. J. (1979). The functions of language and cognition. Academic Press.

Chicago Style (17th ed.) Citation

Whitehurst, Grover J., and Barry J. Zimmerman. The Functions of Language and Cognition. Nueva York: Academic Press, 1979.

MLA (9th ed.) Citation

Whitehurst, Grover J., and Barry J. Zimmerman. The Functions of Language and Cognition. Academic Press, 1979.