United States. Bureau of Economic Analysis. "September 2008," Survey of Current Business (September 2008). https://fraser.stlouisfed.org/title/46/item/10195, accessed on May 10, 2024.
United States. Bureau of Economic Analysis. "September 2008," Survey of Current Business (September 2008). https://fraser.stlouisfed.org/title/46/item/10195, accessed on May 10, 2024.