United States. Department of Commerce. "State Personal Income: First Quarter 2011 : Tables, BEA 11-31," United States Department of Commerce News (June 22, 2011). https://fraser.stlouisfed.org/title/6148/item/604091/content/xls/bea_newsreleases_20110622_tables-onlyexcel, accessed on June 3, 2026.