Dyfyniad APA
ebrary, Inc, Borjas, G. J., & Freeman, R. B. (1992). Immigration and the work force: Economic consequences for the United States and source areas. University of Chicago Press.
Dyfyniad Arddull Chicago
ebrary, Inc, George J. Borjas, and Richard B. Freeman. Immigration and the Work Force: Economic Consequences for the United States and Source Areas. Chicago: University of Chicago Press, 1992.
Dyfyniad MLA
ebrary, Inc, et al. Immigration and the Work Force: Economic Consequences for the United States and Source Areas. University of Chicago Press, 1992.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.