5[1]Mark Ellis & Christine Johnson,1994, Teaching Business English [M]. Oxford University Press.
6[2]Tom Hutchinson & Alan Waters. 1987. English for Specific Purposes-A leaming-centred approach (M). Cambridge: Cambridge University Press.
7[3]Tony Dudley- Evans & Maggie Jo St John. 1998. Developments in English for Specific Purposes-A multi-disciplinary approach. (M). Cambridge: Cambridge University Press.