Federal Reserve Bank of Philadelphia. "January/February 1978," Business Review (Federal Reserve Bank of Philadelphia) (January/February 1978). https://fraser.stlouisfed.org/title/5580/item/557578, accessed on May 9, 2024.
Federal Reserve Bank of Philadelphia. "January/February 1978," Business Review (Federal Reserve Bank of Philadelphia) (January/February 1978). https://fraser.stlouisfed.org/title/5580/item/557578, accessed on May 9, 2024.