(2011). English unlimited B1: Pre-intermediate coursebook. Cambridge: Cambridge University press.
Dyfyniad Arddull ChicagoEnglish Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.
Dyfyniad MLAEnglish Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.