Doff, A., & Jones, C. (1999). Language in use: Beginner : self-study workbook with answer key. Cambridge: Cambridge U. P..
Trích dẫn kiểu ChicagoDoff, Adrian, và Christopher Jones. Language in Use: Beginner : Self-study Workbook With Answer Key. Cambridge: Cambridge U. P., 1999.
Deismireacht MLADoff, Adrian, và Christopher Jones. Language in Use: Beginner : Self-study Workbook With Answer Key. Cambridge: Cambridge U. P., 1999.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.