Cita APA (7th ed.)
ebrary, Inc, Abowd, J. M., & Freeman, R. B. (1991). Immigration, trade, and the labor market. University of Chicago Press.
Cita Chicago (17th ed.)
ebrary, Inc, John M. Abowd, i Richard B. Freeman. Immigration, Trade, and the Labor Market. Chicago: University of Chicago Press, 1991.
Cita MLA (9th ed.)
ebrary, Inc, et al. Immigration, Trade, and the Labor Market. University of Chicago Press, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.