United States. Department of the Treasury. "South African Transactions Regulations," in United States. Department of the Treasury. "Volume 269," Press Releases of the United States Department of the Treasury (October 1, 1985 - November 6, 1985) : 34-50. https://fraser.stlouisfed.org/title/6111/item/587112/toc/556456 , accessed on July 10, 2024.