Okrent, D. (2019). The guarded gate: Bigotry, eugenics, and the law that kept two generations of Jews, Italians, and other European immigrants out of America (First Scribner hardcover edition.). Scribner.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOkrent, Daniel. The Guarded Gate: Bigotry, Eugenics, and the Law That Kept Two Generations of Jews, Italians, and Other European Immigrants Out of America. First Scribner hardcover edition. New York: Scribner, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOkrent, Daniel. The Guarded Gate: Bigotry, Eugenics, and the Law That Kept Two Generations of Jews, Italians, and Other European Immigrants Out of America. First Scribner hardcover edition. Scribner, 2019.
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