Federal Reserve Bank of San Francisco. "Enough Investment?," Economic Letter (Federal Reserve Bank of San Francisco) (February 6, 1976). https://fraser.stlouisfed.org/title/4960/item/527237, accessed on July 4, 2024.
Federal Reserve Bank of San Francisco. "Enough Investment?," Economic Letter (Federal Reserve Bank of San Francisco) (February 6, 1976). https://fraser.stlouisfed.org/title/4960/item/527237, accessed on July 4, 2024.