United States. Bureau of Labor Statistics. "September 1980," The Employment Situation (October 3, 1980). https://fraser.stlouisfed.org/title/144/item/56066, accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "September 1980," The Employment Situation (October 3, 1980). https://fraser.stlouisfed.org/title/144/item/56066, accessed on April 19, 2024.