Carr, J. C. (2004). American cutting egde: Workbook. Hong Kong: Longman Aisa ELT.
Dyfyniad Arddull ChicagoCarr, Jane Comyns. American Cutting Egde: Workbook. Hong Kong: Longman Aisa ELT, 2004.
Dyfyniad MLACarr, Jane Comyns. American Cutting Egde: Workbook. Hong Kong: Longman Aisa ELT, 2004.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.