APA (7th ed.) Citation

Webster, J., Matthiessen, C., & Hasan, R. (2007). Continuing discourse on language: A functional perspective. Equinox.

Chicago Style (17th ed.) Citation

Webster, Jonathan, Christian Matthiessen, and Ruqaiya Hasan. Continuing Discourse on Language: A Functional Perspective. London ; Oakville, Connecticut: Equinox, 2007.

MLA (9th ed.) Citation

Webster, Jonathan, et al. Continuing Discourse on Language: A Functional Perspective. Equinox, 2007.