United States. Bureau of Labor Statistics. "April 1975," The Employment Situation (May 2, 1975). https://fraser.stlouisfed.org/title/144/item/56097, accessed on May 3, 2024.
United States. Bureau of Labor Statistics. "April 1975," The Employment Situation (May 2, 1975). https://fraser.stlouisfed.org/title/144/item/56097, accessed on May 3, 2024.