United States. Bureau of Economic Analysis. "Real Personal Income for States and Metropolitan Areas, 2007-2011 (Prototype Estimate) : Highlights, Metropolitan Area: BEA Introduces New Measures of Regional Economy, BEA 13-26," Bureau of Economic Analysis (BEA) News Releases (June 12, 2013). https://fraser.stlouisfed.org/title/6148/item/601549/content/pdf/bea_newsreleases_20130612_highlights--metropolitan-area, accessed on March 17, 2025.