Elaine Walker. (2000). New grammar practice for pre-intermediate students. London: Longman.
Trích dẫn kiểu ChicagoElaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.
Deismireacht MLAElaine Walker. New Grammar Practice for Pre-intermediate Students. London: Longman, 2000.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.