United States. Bureau of Economic Analysis. "U.S. International Trade in Goods and Services, August 2023 : Historical Comparisons, BEA 23-47, CB 23-166," Bureau of Economic Analysis (BEA) News Releases (October 5, 2023). https://fraser.stlouisfed.org/title/6148/item/656069/content/pdf/bea_newsreleases_20231005_historical, accessed on March 27, 2025.