1. Agar, M. (1 985). Institutional discourse. Text, 5, 147- 168.
2. Congruence in Native and Nonnative Conversations: Status Balance in the Academic Advising Session *
3. Bardovi-Harlig, K- & Hartford, B. S. (1991). Saying "no": Native and nonnative rejections in English.In IL. Bouton & Y. Kachru (Eds.), Pragmatics and language learning (Monograph2, pp. 41-57). Urbana, IL: Division of English as an International Language.
4. Brown, P. & Levinson, S. (1978). Universals in language usage: Politeness phenomena.In E. N. Goody (Ed.), Questions and politeness (pp. 56-289). Cambridge, England: Cambridge University Press.
5. Brown, P. & Levinson, S. (1987).Politeness: Some universals in language usage. Cambridge, England: Cambridge University Press.