Hawkins, G. (1985). U.S.A by bus and train. New York: Pantheon Books.
Dyfyniad Arddull ChicagoHawkins, Gary. U.S.A By Bus and Train. New York: Pantheon Books, 1985.
Dyfyniad MLAHawkins, Gary. U.S.A By Bus and Train. New York: Pantheon Books, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.