United States. Bureau of Labor Statistics. "Persons Not in Labor Force by Reason, Sex, and Race, Quarterly Averages," in United States. Bureau of Labor Statistics. "September 1986," The Employment Situation (October 3, 1986) : 16-16. https://fraser.stlouisfed.org/title/144/item/56188/toc/495332 , accessed on April 23, 2024.