APA (7th ed.) Citation

Halliday, M. A. K. (1994). An introduction to functional grammar (2nd ed.). Edward Arnold.

Chicago Style (17th ed.) Citation

Halliday, M. A. K. An Introduction to Functional Grammar. 2nd ed. London [etc.]: Edward Arnold, 1994.

MLA (9th ed.) Citation

Halliday, M. A. K. An Introduction to Functional Grammar. 2nd ed. Edward Arnold, 1994.