Gairns, R., & Redman, S. (2002). Natural english: Intermediate teacher's book. Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoGairns, Ruth, và Stuart Redman. Natural English: Intermediate Teacher's Book. Oxford: Oxford Univ. Press, 2002.
Deismireacht MLAGairns, Ruth, và Stuart Redman. Natural English: Intermediate Teacher's Book. Oxford: Oxford Univ. Press, 2002.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.