Federal Reserve Bank of San Francisco. "Un-Cola?," Economic Letter (Federal Reserve Bank of San Francisco) (May 7, 1976). https://fraser.stlouisfed.org/title/4960/item/527250, accessed on May 4, 2024.
Federal Reserve Bank of San Francisco. "Un-Cola?," Economic Letter (Federal Reserve Bank of San Francisco) (May 7, 1976). https://fraser.stlouisfed.org/title/4960/item/527250, accessed on May 4, 2024.