Norton Ginsburg. (1961). Atlas of economic development. Chicago: Univ. of Chicago Press.
Dyfyniad Arddull ChicagoNorton Ginsburg. Atlas of Economic Development. Chicago: Univ. of Chicago Press, 1961.
Dyfyniad MLANorton Ginsburg. Atlas of Economic Development. Chicago: Univ. of Chicago Press, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.