United States. Department of the Treasury. "Treasury August Quarterly, August 3, 1988, Release Number b-1502," in United States. Department of the Treasury. "Volume 286," Press Releases of the United States Department of the Treasury (June 1, 1988 - September 16, 1988) : 396-398. https://fraser.stlouisfed.org/title/6111/item/587129/toc/535424 , accessed on June 18, 2024.