Thomson, A., & Martinet, A. (1990). A Practical English Grammar: Exercises. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoThomson, A.J., và A.V Martinet. A Practical English Grammar: Exercises. Oxford: Oxford University Press, 1990.
Dyfyniad MLAThomson, A.J., và A.V Martinet. A Practical English Grammar: Exercises. Oxford: Oxford University Press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.