United States. Bureau of Labor Statistics. "September 1980," CPI Detailed Report (September 1980). https://fraser.stlouisfed.org/title/58/item/19374, accessed on April 18, 2024.
United States. Bureau of Labor Statistics. "September 1980," CPI Detailed Report (September 1980). https://fraser.stlouisfed.org/title/58/item/19374, accessed on April 18, 2024.