Denison, E. F. (1967). Why growth rates differ. Washington: The Brookings Institution.
Dyfyniad Arddull ChicagoDenison, Edward F. Why Growth Rates Differ. Washington: The Brookings Institution, 1967.
Dyfyniad MLADenison, Edward F. Why Growth Rates Differ. Washington: The Brookings Institution, 1967.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.