Jones, L. (1994). Ideas: Speaking and Listening Activities for Upper-Intermediate Students. Cambridge: Cambridge University.
Chicago-tyylinen lähdeviittausJones, Leo. Ideas: Speaking and Listening Activities for Upper-Intermediate Students. Cambridge: Cambridge University, 1994.
MLA-viiteJones, Leo. Ideas: Speaking and Listening Activities for Upper-Intermediate Students. Cambridge: Cambridge University, 1994.
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