Thornbury, S. (2004). Natural grammar. N.Y.: Oxford University Press.
Trích dẫn kiểu ChicagoThornbury, Scott. Natural Grammar. N.Y.: Oxford University Press, 2004.
Deismireacht MLAThornbury, Scott. Natural Grammar. N.Y.: Oxford University Press, 2004.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.