Federal Reserve Bank of Philadelphia. "July/August 1987," Business Review (Federal Reserve Bank of Philadelphia) (July/August 1987). https://fraser.stlouisfed.org/title/5580/item/557635, accessed on May 5, 2024.
Federal Reserve Bank of Philadelphia. "July/August 1987," Business Review (Federal Reserve Bank of Philadelphia) (July/August 1987). https://fraser.stlouisfed.org/title/5580/item/557635, accessed on May 5, 2024.