United States. Bureau of Labor Statistics. "December 1972," CPI Detailed Report (December 1972). https://fraser.stlouisfed.org/title/58/item/22202, accessed on May 11, 2024.
United States. Bureau of Labor Statistics. "December 1972," CPI Detailed Report (December 1972). https://fraser.stlouisfed.org/title/58/item/22202, accessed on May 11, 2024.