National bureau of economic research. (1989). NBER working paper series on historical factors in long run growth. National Bureau of Economic Research.
Style de citation Chicago (17e éd.)National bureau of economic research. NBER Working Paper Series on Historical Factors in Long Run Growth. Cambridge, MA: National Bureau of Economic Research, 1989.
Style de citation MLA (8e éd.)National bureau of economic research. NBER Working Paper Series on Historical Factors in Long Run Growth. National Bureau of Economic Research, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.