United States. Bureau of Labor Statistics. "Number of Jobs, Labor Market Experience, and Earnings Growth: Results from a Longitudinal Survey, USDL 98-253," Number of Jobs, Labor Market Experience, Marital Status, and Health for Those Born 1957–1964 (June 24, 1998). https://fraser.stlouisfed.org/title/9650/item/707280, accessed on December 5, 2025.