3. How to do things with words Austin, J. L. (John Langshaw), 1911-1960. Oxford : Oxford University Press, 1976. ENG486
4. Measuring interlanguage pragmatic knowledge of EFL learners Liu, Jianda. Frankfurt am Main ; Peter Lang, c2006. ENG486
5. Handbook of research in second language teaching and learning Mahwah, N.J. : L. Erlbaum Associates, 2005- ENG486
