(1997). Headway intermediate: Student's book. Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoHeadway Intermediate: Student's Book. Oxford: Oxford Univ. Press, 1997.
Deismireacht MLAHeadway Intermediate: Student's Book. Oxford: Oxford Univ. Press, 1997.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.