United States. Bureau of Labor Statistics. "April 1975," CPI Detailed Report (April 1975). https://fraser.stlouisfed.org/title/58/item/19309, accessed on March 18, 2024.
United States. Bureau of Labor Statistics. "April 1975," CPI Detailed Report (April 1975). https://fraser.stlouisfed.org/title/58/item/19309, accessed on March 18, 2024.