United States. Bureau of Economic Analysis. "June 2013," Survey of Current Business (June 2013). https://fraser.stlouisfed.org/title/46/item/10249, accessed on April 18, 2024.
United States. Bureau of Economic Analysis. "June 2013," Survey of Current Business (June 2013). https://fraser.stlouisfed.org/title/46/item/10249, accessed on April 18, 2024.