United States. Bureau of Economic Analysis. "Personal Income and Outlays: August 2018 : Full Release, BEA 18-52," Bureau of Economic Analysis (BEA) News Releases (September 28, 2018). https://fraser.stlouisfed.org/title/6148/item/602660/content/pdf/bea_newsreleases_20180928, accessed on March 15, 2025.