Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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