United States. Bureau of Economic Analysis. "Second Quarter Growth in Service Industries Widespread Across States : Gross Domestic Product by State, 2005 Through 2nd Quarter 2015, BEA 15-61," Bureau of Economic Analysis (BEA) News Releases (December 10, 2015). https://fraser.stlouisfed.org/title/6148/item/602279, accessed on March 26, 2025.