Klippel, F. (1984). Keep talking: Communicative fluency activities for language teaching. Cambridge [Cambridgeshire] ; New York: Cambridge University Press.
Chicago-tyylinen lähdeviittausKlippel, Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1984.
MLA-viiteKlippel, Friederike. Keep Talking: Communicative Fluency Activities for Language Teaching. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1984.
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