United States. Bureau of Labor Statistics. "Number of Jobs Held, Labor Market Activity, and Earnings Growth over Two Decades: Results from a Longitudinal Survey, USDL 00-119," Number of Jobs, Labor Market Experience, Marital Status, and Health for Those Born 1957–1964 (April 25, 2000). https://fraser.stlouisfed.org/title/9650/item/707281, accessed on January 4, 2026.