Card, D., DiNardo, J., & Estes, E. (1998). The more things change: Immigrants and the children of immigrants in the 1940s, the 1970s, and the 1990s. National Bureau of Economic Research.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCard, David, John DiNardo, और Eugena Estes. The More Things Change: Immigrants and the Children of Immigrants in the 1940s, the 1970s, and the 1990s. Cambridge: National Bureau of Economic Research, 1998.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCard, David, et al. The More Things Change: Immigrants and the Children of Immigrants in the 1940s, the 1970s, and the 1990s. National Bureau of Economic Research, 1998.
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