United States. Bureau of Labor Statistics. "January 1987," CPI Detailed Report (January 1987). https://fraser.stlouisfed.org/title/58/item/19271, accessed on May 7, 2024.
United States. Bureau of Labor Statistics. "January 1987," CPI Detailed Report (January 1987). https://fraser.stlouisfed.org/title/58/item/19271, accessed on May 7, 2024.