United States. Bureau of Economic Analysis. "Gross Domestic Product by State, 3rd Quarter 2021 : Full Release, BEA 21-69," Bureau of Economic Analysis (BEA) News Releases (December 23, 2021). https://fraser.stlouisfed.org/title/6148/item/610428/content/pdf/bea_newsreleases_20211223b, accessed on March 11, 2025.