Oxenden, C. (2010). American English file: Workbook starter with answer key. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoOxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.
Dyfyniad MLAOxenden, Clive. American English File: Workbook Starter With Answer Key. Oxford: Oxford University Press, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.