APA (7th ed.) Citation

Halliday, M. A. K., & Webster, J. (2009). The essential Halliday. Continuum.

Chicago Style (17th ed.) Citation

Halliday, M. A. K., and Jonathan Webster. The Essential Halliday. London ; New York: Continuum, 2009.

MLA (9th ed.) Citation

Halliday, M. A. K., and Jonathan Webster. The Essential Halliday. Continuum, 2009.

Warning: These citations may not always be 100% accurate.