Ward Haugh, R. (2003). Understanding English grammar: A linguistic approach (2.). Blackwell.
Dyfyniad Arddull ChicagoWard Haugh, Ronald. Understanding English Grammar: A Linguistic Approach. 2. USA: Blackwell, 2003.
Dyfyniad MLAWard Haugh, Ronald. Understanding English Grammar: A Linguistic Approach. 2. Blackwell, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.