Federal Reserve Bank of Philadelphia. "March/April 1977," Business Review (Federal Reserve Bank of Philadelphia) (March/April 1977). https://fraser.stlouisfed.org/title/5580/item/557573, accessed on April 17, 2024.
Federal Reserve Bank of Philadelphia. "March/April 1977," Business Review (Federal Reserve Bank of Philadelphia) (March/April 1977). https://fraser.stlouisfed.org/title/5580/item/557573, accessed on April 17, 2024.