Dyfyniad APA

(2011). English unlimited B1: Pre-intermediate coursebook. Cambridge: Cambridge University press.

Dyfyniad Arddull Chicago

English Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.

Dyfyniad MLA

English Unlimited B1: Pre-intermediate Coursebook. Cambridge: Cambridge University press, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.