Federal Reserve Bank of Philadelphia. "September/October 1980," Business Review (Federal Reserve Bank of Philadelphia) (September/October 1980). https://fraser.stlouisfed.org/title/5580/item/557594, accessed on April 19, 2024.
Federal Reserve Bank of Philadelphia. "September/October 1980," Business Review (Federal Reserve Bank of Philadelphia) (September/October 1980). https://fraser.stlouisfed.org/title/5580/item/557594, accessed on April 19, 2024.