Johnson, A. M. (1974). The American economy: An historical introduction to the problems of the 1970s. Free Press.
Dyfyniad Arddull ChicagoJohnson, Arthur M. The American Economy: An Historical Introduction to the Problems of the 1970s. New York: Free Press, 1974.
Dyfyniad MLAJohnson, Arthur M. The American Economy: An Historical Introduction to the Problems of the 1970s. Free Press, 1974.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.