United States. Bureau of Economic Analysis. "Gross Domestic Product: Third Quarter 2016 (Advance Estimate) : Technical Note, BEA 16-57," Bureau of Economic Analysis (BEA) News Releases (October 28, 2016). https://fraser.stlouisfed.org/title/6148/item/602377/content/pdf/bea_newsreleases_20161028_technical-note, accessed on March 21, 2025.