United States. Bureau of Labor Statistics. "January 1987," The Employment Situation (February 6, 1987). https://fraser.stlouisfed.org/title/144/item/56190, accessed on May 9, 2024.
United States. Bureau of Labor Statistics. "January 1987," The Employment Situation (February 6, 1987). https://fraser.stlouisfed.org/title/144/item/56190, accessed on May 9, 2024.