References
- Keynes, John Maynard. The General Theory of Employment, Interest and Money. New York: Harcourt, Brace, and Co., 1936.
- Keynes, John Maynard. “Some Economic Consequences of a Declining Population.” Eugenics Review, April 1937, 29, 13–17.
- Tarascio, Vincent J. “Keynes on the Sources of Economic Growth.” The Journal of Economic History, June 1971, 31, 429–443.
- U.S. Bureau of the Census, Historical Statistics of the United States: Colonial Times to 1970, Part 1 and II. Washington, D.C., 1970, pp. 8, 1004.
- U. S. Bureau of the Census, Statistical Abstract of the United States. Washington, D.C., 1980, pp. 6, 546.