United States. Bureau of Economic Analysis. "Personal Income and Outlays, December 2019 : Highlights: Personal Income and Outlays, December 2019, BEA 20-05," Bureau of Economic Analysis (BEA) News Releases (January 31, 2020). https://fraser.stlouisfed.org/title/6148/item/602880/content/pdf/bea_newsreleases_20200131_release-highlights, accessed on March 16, 2025.