Basil Hatim & Ian Mason (1990) : argumentative, expositive and instruction based
Peter Newmark( 1988): Expressive, Informative , Vocative.
Katharina Riss ( 1970s): Informative , Expressive, Operative, Audio medial.
James Dickins, Sandor Hervey and Ian Higgins(2002): Literary, Religious Philosophical, Empirical , Persuasive.