Doff, A., & Jones, C. (1994). Language in use: Intermediate : self-study workbook with answer key [Băng Casset]. Cambridge: Cambridge U. P..
Παραπομπή Chicago StyleDoff, Adrian, και Christopher Jones. Language in Use: Intermediate : Self-study Workbook With Answer Key [Băng Casset]. Cambridge: Cambridge U. P., 1994.
Παραπομπή MLADoff, Adrian, και Christopher Jones. Language in Use: Intermediate : Self-study Workbook With Answer Key [Băng Casset]. Cambridge: Cambridge U. P., 1994.
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