Scarbrough, D. (1992). Reasons for listening. New York: Cambridge University Press.
Dyfyniad Arddull ChicagoScarbrough, David. Reasons for Listening. New York: Cambridge University Press, 1992.
Dyfyniad MLAScarbrough, David. Reasons for Listening. New York: Cambridge University Press, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.