7Algeo, J. It's a Myth, Innit? Politeness and the English Tag Question. Ricks, C. & Michaels, L. (eds). The State of the Language. Berkeley: University of California Press, 1990.
8Brown, C. What Discourse Analysis Reveals about Tag Questions. Paper presented at the Annul TESOL Conference, Detroit. March 6, 1981.
9Brown, P. & Levinson, S. Universals in Language Usage: Politeness Phenomena. Goody, E.N. (ed.). Questions and Politeness: Strategies in Social Interaction. New York: Cambridge University, 1978.
10Fishman, P. Conversational Insecurity. Giles, H., Robinson, W. , & Smith, P. (eds.). Language: Social Psychological Perspective. Oxford : Pergamon Press, 1980.