United States. Bureau of Economic Analysis. "Foreign Affiliates of U.S. Firms Decreased Reliance on U.S. Funds in 1968, OBE 70-69,"
Bureau of Economic Analysis (BEA) News Releases
(December 24, 1970).
https://fraser.stlouisfed.org/title/6148/item/595101, accessed on March 22, 2025.