United States. Department of the Treasury. "Treasury's Weekly Bill Results, January 28, 1980, Release Number m-299," in United States. Department of the Treasury. "Volume 227," Press Releases of the United States Department of the Treasury (January 2, 1980 - February 29, 1980) : 140-142. https://fraser.stlouisfed.org/title/6111/item/587070/toc/531170 , accessed on April 20, 2024.