(1986). Language power. New York: Random House.
Dyfyniad Arddull ChicagoLanguage Power. New York: Random House, 1986.
Dyfyniad MLALanguage Power. New York: Random House, 1986.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
(1986). Language power. New York: Random House.
Dyfyniad Arddull ChicagoLanguage Power. New York: Random House, 1986.
Dyfyniad MLALanguage Power. New York: Random House, 1986.