Hadfield, J., & Hadfield, C. (1999). Simple speaking activities. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoHadfield, Jill, và Charles Hadfield. Simple Speaking Activities. Oxford: Oxford University Press, 1999.
Deismireacht MLAHadfield, Jill, và Charles Hadfield. Simple Speaking Activities. Oxford: Oxford University Press, 1999.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.