Federal Reserve Bank of San Francisco. "Mini-OPEC's?," Economic Letter (Federal Reserve Bank of San Francisco) (April 9, 1976). https://fraser.stlouisfed.org/title/4960/item/527246, accessed on July 12, 2024.
Federal Reserve Bank of San Francisco. "Mini-OPEC's?," Economic Letter (Federal Reserve Bank of San Francisco) (April 9, 1976). https://fraser.stlouisfed.org/title/4960/item/527246, accessed on July 12, 2024.