Razin, A., & Sadka, E. (1999). Unskilled migration: A burden or a boon for the welfare state. National Bureau of Economic Research.
芝加哥风格引文Razin, Assaf, 与 Efraim Sadka. Unskilled Migration: A Burden or a Boon for the Welfare State. Cambridge: National Bureau of Economic Research, 1999.
MLA引文Razin, Assaf, 与 Efraim Sadka. Unskilled Migration: A Burden or a Boon for the Welfare State. National Bureau of Economic Research, 1999.
警告：这些引文格式不一定是100％准确.