United States. Bureau of Economic Analysis. "Manufacturing Industries Led Slowdown in 2008 : Highlights: Manufacturing Led Slowdown in 2008 : Advance GDP by Industry Statistics, BEA 09-16,"
Bureau of Economic Analysis (BEA) News Releases
(April 28, 2009).
https://fraser.stlouisfed.org/title/6148/item/600666/content/pdf/bea_newsreleases_20090428_highlights, accessed on June 23, 2025.