1. How to do things with words Austin, J. L. (John Langshaw), 1911-1960. Cambridge, Mass. : Harvard University Press, c1975. ENG486
2. How to do things with words Austin, J. L. (John Langshaw), 1911-1960. Oxford : Oxford University Press, 1976. ENG486
3. Politeness: some universals in language usage Brown, Penelope. Cambridge [Cambridgeshire] ; Cambridge University Press, 1987. ENG486
