Lua APA (7ú heag.)
ebrary, Inc, Abowd, J. M., & Freeman, R. B. (1991). Immigration, trade, and the labor market. University of Chicago Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, John M. Abowd, agus Richard B. Freeman. Immigration, Trade, and the Labor Market. Chicago: University of Chicago Press, 1991.
Lua MLA (9ú heag.)
ebrary, Inc, et al. Immigration, Trade, and the Labor Market. University of Chicago Press, 1991.
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