Comfort, J. (1994). Speaking effectively: Developing speaking skills for business English. Cambridge: Cambridge University Press.
Trích dẫn kiểu ChicagoComfort, Jeremy. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge: Cambridge University Press, 1994.
Deismireacht MLAComfort, Jeremy. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge: Cambridge University Press, 1994.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.