Dignen, S. (2007). Top score: Teacher's book 4. Oxford: Oxford University Press.
Dyfyniad Arddull ChicagoDignen, Sheila. Top Score: Teacher's Book 4. Oxford: Oxford University Press, 2007.
Dyfyniad MLADignen, Sheila. Top Score: Teacher's Book 4. Oxford: Oxford University Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.