APA (7th ed.) Citation

Halliday, M. A. K., & Matthiessen, C. M. (2004). An introduction to functional grammar (3rd edition.). Arnold.

Chicago Style (17th ed.) Citation

Halliday, M. A. K., and Christian M.I.M Matthiessen. An Introduction to Functional Grammar. 3rd edition. London: Arnold, 2004.

MLA (8th ed.) Citation

Halliday, M. A. K., and Christian M.I.M Matthiessen. An Introduction to Functional Grammar. 3rd edition. Arnold, 2004.