Gay, P. (1974). Style in history. McGraw-Hill.
Dyfyniad Arddull ChicagoGay, Peter. Style in History. New York: McGraw-Hill, 1974.
Dyfyniad MLAGay, Peter. Style in History. McGraw-Hill, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.