United States. Bureau of Labor Statistics. "February 1968," CPI Detailed Report (February 1968). https://fraser.stlouisfed.org/title/58/item/22140, accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "February 1968," CPI Detailed Report (February 1968). https://fraser.stlouisfed.org/title/58/item/22140, accessed on April 18, 2024.