Understanding, Speaking, Reading, Writing, and Earnings in the Immigrant Labor Market
研究移民在劳动力市场中，英语的理解、口语、阅读和写作能力如何影响其收入，基于美国数据进行分析。
Understanding, Speaking, Reading, Writing, and Earnings in the Immigrant Labor Market by Anthony P. Carnevale, Richard A. Fry and B. Lindsay Lowell. Published in volume 91, issue 2, pages 159-163 of American Economic Review, May 2001