United States. Bureau of Labor Statistics. "December 1988," The Employment Situation (January 6, 1989). https://fraser.stlouisfed.org/title/144/item/56034, accessed on April 19, 2024.
United States. Bureau of Labor Statistics. "December 1988," The Employment Situation (January 6, 1989). https://fraser.stlouisfed.org/title/144/item/56034, accessed on April 19, 2024.