Vousden, N. (1990). The economics of trade protection. Cambridge University Press.
Dyfyniad Arddull ChicagoVousden, Neil. The Economics of Trade Protection. Cambridge ; New York: Cambridge University Press, 1990.
Dyfyniad MLAVousden, Neil. The Economics of Trade Protection. Cambridge University Press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.