United States. Department of Commerce. "Personal Income and Outlays: March 2008 : Tables, BEA 08-19," United States Department of Commerce News (May 1, 2008). https://fraser.stlouisfed.org/title/6148/item/600452/content/xls/bea_newsreleases_20080501_tables-only--excel, accessed on June 12, 2026.