United States. Bureau of Labor Statistics. "April 1978," CPI Detailed Report (April 1978). https://fraser.stlouisfed.org/title/58/item/19345, accessed on March 18, 2024.
United States. Bureau of Labor Statistics. "April 1978," CPI Detailed Report (April 1978). https://fraser.stlouisfed.org/title/58/item/19345, accessed on March 18, 2024.