Paul Roberts. (1999). Cambridge first certificate: Reading. Cambridge, UK: Cambridge Unversity Press.
Dyfyniad Arddull ChicagoPaul Roberts. Cambridge First Certificate: Reading. Cambridge, UK: Cambridge Unversity Press, 1999.
Dyfyniad MLAPaul Roberts. Cambridge First Certificate: Reading. Cambridge, UK: Cambridge Unversity Press, 1999.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.