Rostow, W. W. (1980). Why the poor get richer and the rich slow down: Essays in the Marshallian long period. University of Texas Press.
Lua i Stíl Chicago (17ú heag.)Rostow, W. W. Why the Poor Get Richer and the Rich Slow Down: Essays in the Marshallian Long Period. Austin: University of Texas Press, 1980.
Lua MLA (9ú heag.)Rostow, W. W. Why the Poor Get Richer and the Rich Slow Down: Essays in the Marshallian Long Period. University of Texas Press, 1980.