United States. Bureau of Labor Statistics. "December 1977," CPI Detailed Report (December 1977). https://fraser.stlouisfed.org/title/58/item/19341, accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "December 1977," CPI Detailed Report (December 1977). https://fraser.stlouisfed.org/title/58/item/19341, accessed on April 18, 2024.