United States. Bureau of Economic Analysis. "Personal Income and Outlays: December 2012 : Historical Comparison, BEA 13-03,"
Bureau of Economic Analysis (BEA) News Releases
(January 31, 2013).
https://fraser.stlouisfed.org/title/6148/item/601527/content/pdf/bea_newsreleases_20130131_historical-comparisons, accessed on July 20, 2025.