Doff, A. (2010). English unlimited A1: Starter self-study pack. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoDoff, Adrian. English Unlimited A1: Starter Self-study Pack. Cambridge: Cambridge University Press, 2010.
Deismireacht MLADoff, Adrian. English Unlimited A1: Starter Self-study Pack. Cambridge: Cambridge University Press, 2010.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.