United States. Department of Commerce. "National Income and Product Accounts : Gross Domestic Product: Second Quarter 2012 (Advance Estimate) | Revised Estimates: 2009 through First Quarter 2012, BEA 12-32,"
United States Department of Commerce News
(July 27, 2012).
https://fraser.stlouisfed.org/title/6148/item/601345, accessed on May 31, 2026.