Federal Reserve Bank of Philadelphia. "May/June 1987," Business Review (Federal Reserve Bank of Philadelphia) (May/June 1987). https://fraser.stlouisfed.org/title/5580/item/557634, accessed on April 23, 2024.
Federal Reserve Bank of Philadelphia. "May/June 1987," Business Review (Federal Reserve Bank of Philadelphia) (May/June 1987). https://fraser.stlouisfed.org/title/5580/item/557634, accessed on April 23, 2024.