Langan John. (2005). English Skills: Text, Student CD, and Bind-In Card. American: MC Graw Hill.
Dyfyniad Arddull ChicagoLangan John. English Skills: Text, Student CD, and Bind-In Card. American: MC Graw Hill, 2005.
Dyfyniad MLALangan John. English Skills: Text, Student CD, and Bind-In Card. American: MC Graw Hill, 2005.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.