APA (7th ed.) Citation

Fox, B. A., & Hopper, P. J. (1994). Voice: Form and function. John Benjamins.

Chicago Style (17th ed.) Citation

Fox, Barbara A., and Paul J. Hopper. Voice: Form and Function. Amsterdam [etc.]: John Benjamins, 1994.

MLA (9th ed.) Citation

Fox, Barbara A., and Paul J. Hopper. Voice: Form and Function. John Benjamins, 1994.