Federal Reserve Bank of Philadelphia. "January/February 1977," Business Review (Federal Reserve Bank of Philadelphia) (January/February 1977). https://fraser.stlouisfed.org/title/5580/item/557572, accessed on May 4, 2024.
Federal Reserve Bank of Philadelphia. "January/February 1977," Business Review (Federal Reserve Bank of Philadelphia) (January/February 1977). https://fraser.stlouisfed.org/title/5580/item/557572, accessed on May 4, 2024.