United States. Bureau of Economic Analysis. "State Annual Personal Income, 2020 (Preliminary) and State Quarterly Personal Income, 4th Quarter 2020 : Highlights: Personal Income by State, 2020, BEA 21-10,"
Bureau of Economic Analysis (BEA) News Releases
(March 24, 2021).
https://fraser.stlouisfed.org/title/6148/item/601645/content/pdf/bea_newsreleases_20210324_highlights, accessed on May 20, 2025.