United States. Bureau of Labor Statistics. "June 1968," CPI Detailed Report (June 1968). https://fraser.stlouisfed.org/title/58/item/22144, accessed on May 1, 2024.
United States. Bureau of Labor Statistics. "June 1968," CPI Detailed Report (June 1968). https://fraser.stlouisfed.org/title/58/item/22144, accessed on May 1, 2024.