Federal Reserve Bank of San Francisco. "September 1968," Economic Review (Federal Reserve Bank of San Francisco) (September 1968). https://fraser.stlouisfed.org/title/869/item/520266, accessed on March 29, 2024.
Federal Reserve Bank of San Francisco. "September 1968," Economic Review (Federal Reserve Bank of San Francisco) (September 1968). https://fraser.stlouisfed.org/title/869/item/520266, accessed on March 29, 2024.