United States. Bureau of Economic Analysis. "Merchandise Trade in the First Quarter 1978 : Balance of Payments Basis, BEA 78-30,"
Bureau of Economic Analysis (BEA) News Releases
(May 1, 1978).
https://fraser.stlouisfed.org/title/6148/item/595747, accessed on March 24, 2025.
@FedFRASER