Hartley, R. B. (2014). The U.S. science and engineering workforce: Employment and wage trends = United States science and engineering workforce. Novinka.
Chicago-Zitierstil (17. Ausg.)Hartley, Russell B. The U.S. Science and Engineering Workforce: Employment and Wage Trends = United States Science and Engineering Workforce. New York: Novinka, 2014.
MLA-Zitierstil (9. Ausg.)Hartley, Russell B. The U.S. Science and Engineering Workforce: Employment and Wage Trends = United States Science and Engineering Workforce. Novinka, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.