Sarah Cunningham. (1999). Cutting edge: Student's Book. Harlow: Pearson Education.
Dyfyniad Arddull ChicagoSarah Cunningham. Cutting Edge: Student's Book. Harlow: Pearson Education, 1999.
Dyfyniad MLASarah Cunningham. Cutting Edge: Student's Book. Harlow: Pearson Education, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.