(2003). American Headway 3: Student book. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoAmerican Headway 3: Student Book. Oxford: Oxford University Press, 2003.
Dyfyniad MLAAmerican Headway 3: Student Book. Oxford: Oxford University Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.