United States. Bureau of Labor Statistics. "December 1987," CPI Detailed Report (December 1987). https://fraser.stlouisfed.org/title/58/item/19282, accessed on March 19, 2024.
United States. Bureau of Labor Statistics. "December 1987," CPI Detailed Report (December 1987). https://fraser.stlouisfed.org/title/58/item/19282, accessed on March 19, 2024.