United States. Bureau of Labor Statistics. "July 1981," The Employment Situation (August 7, 1981). https://fraser.stlouisfed.org/title/144/item/56144, accessed on April 28, 2024.
United States. Bureau of Labor Statistics. "July 1981," The Employment Situation (August 7, 1981). https://fraser.stlouisfed.org/title/144/item/56144, accessed on April 28, 2024.