Halliday, M. A. K. (2005). Studies in english language (1a. ed.). Continuum.
Chicago Style (17th ed.) ZitazioaHalliday, Michael Alexander Kirkwood. Studies in English Language. 1a. ed. Londres: Continuum, 2005.
MLA (9th ed.) ZitazioaHalliday, Michael Alexander Kirkwood. Studies in English Language. 1a. ed. Continuum, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.