Board of Governors of the Federal Reserve System (U.S.), 1935-. "Date deferred on the new methods of calculating and disclosing the annual percentage rate on consumer loans becomes mandatory (Regulation Z)" in Press Releases of the Board of Governors of the Federal Reserve System
(August 21, 1980).
https://fraser.stlouisfed.org/title/9237/item/695103, accessed on May 21, 2026.