APA (7th ed.) Citation

Wheddon, C., & Linggard, R. (1990). Speech and language processing. Chapman and Hall.

Chicago Style (17th ed.) Citation

Wheddon, C., and R. Linggard. Speech and Language Processing. London: Chapman and Hall, 1990.

MLA (9th ed.) Citation

Wheddon, C., and R. Linggard. Speech and Language Processing. Chapman and Hall, 1990.