Cita APA (7th ed.)
ebrary, Inc, Freeman, R. B., & Goroff, D. L. (2009). Science and engineering careers in the United States: An analysis of markets and employment. University of Chicago Press.
Cita Chicago (17th ed.)
ebrary, Inc, Richard B. Freeman, i Daniel L. Goroff. Science and Engineering Careers in the United States: An Analysis of Markets and Employment. Chicago: University of Chicago Press, 2009.
Cita MLA (9th ed.)
ebrary, Inc, et al. Science and Engineering Careers in the United States: An Analysis of Markets and Employment. University of Chicago Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.