United States. Bureau of Labor Statistics. "July 1991," CPI Detailed Report (July 1991). https://fraser.stlouisfed.org/title/58/item/19406, accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "July 1991," CPI Detailed Report (July 1991). https://fraser.stlouisfed.org/title/58/item/19406, accessed on April 18, 2024.