United States. Department of the Treasury. "Treasury's Weekly Bill Results, February 15, 1980, Release Number m-328," 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) : 402-407. https://fraser.stlouisfed.org/title/6111/item/587070/toc/531201 , accessed on April 20, 2024.