Hobson, A. (2001). The Oxford dictionary of difficult words. Oxford University Press.
Dyfyniad Arddull ChicagoHobson, Archie. The Oxford Dictionary of Difficult Words. New York: Oxford University Press, 2001.
Dyfyniad MLAHobson, Archie. The Oxford Dictionary of Difficult Words. Oxford University Press, 2001.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.