United States. Bureau of Economic Analysis. "Private Goods and Private Services Sectors Accelerated in 2006 : Advance Estimates of Gross Domestic Product (GDP) by Industry, BEA 07-16,"
Bureau of Economic Analysis (BEA) News Releases
(April 24, 2007).
https://fraser.stlouisfed.org/title/6148/item/598957, accessed on November 14, 2025.