United States. Bureau of Economic Analysis. "August 2013," Survey of Current Business (August 2013). https://fraser.stlouisfed.org/title/46/item/10251, accessed on June 27, 2024.
United States. Bureau of Economic Analysis. "August 2013," Survey of Current Business (August 2013). https://fraser.stlouisfed.org/title/46/item/10251, accessed on June 27, 2024.