Cita APA (7a ed.)

Abowd, J. M., & Freeman, R. B. (1991). Immigration, trade, and the labor market. University of Chicago Press.

Cita Chicago Style (17a ed.)

Abowd, John M., y Richard B. Freeman. Immigration, Trade, and the Labor Market. Chicago: University of Chicago Press, 1991.

Cita MLA (8a ed.)

Abowd, John M., y Richard B. Freeman. Immigration, Trade, and the Labor Market. University of Chicago Press, 1991.