United States. Bureau of Labor Statistics. "September 1989," CPI Detailed Report (September 1989). https://fraser.stlouisfed.org/title/58/item/19384, accessed on March 18, 2024.
United States. Bureau of Labor Statistics. "September 1989," CPI Detailed Report (September 1989). https://fraser.stlouisfed.org/title/58/item/19384, accessed on March 18, 2024.