Ketelbey, C. (1965). History of Modern Times. Oxford University.
Dyfyniad Arddull ChicagoKetelbey, C.D.M. History of Modern Times. London: Oxford University, 1965.
Dyfyniad MLAKetelbey, C.D.M. History of Modern Times. Oxford University, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.