1HaUiday, M. A. K. Language, Context and Text. Victoria: Deakin University, 1955.
2Halliday, M. A. K. An Introduction to Functional Grammar (2nd ed. ). London : Amold/Beijing: Foreign Language Teaching and Researching Press, 1994/2000.
3Halliday, M. A. K. & Hasan, R. Language, Context and Text : Aspects of Language in a Social - semiotic Per- spective. Beijing: Peking University Press, 1985.