United States. Bureau of Economic Analysis. "Personal Income and Outlays : June 1990, Revised Estimates: 1987 Through May 1990, BEA 90-34,"
Bureau of Economic Analysis (BEA) News Releases
(July 30, 1990).
https://fraser.stlouisfed.org/title/6148/item/596758, accessed on July 18, 2025.