Macfarlane, M. (1994). Open doors: Workbook 1. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoMacfarlane, Mike. Open Doors: Workbook 1. Oxford: Oxford University Press, 1994.
Dyfyniad MLAMacfarlane, Mike. Open Doors: Workbook 1. Oxford: Oxford University Press, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.