McKenzie, D., Stillman, S., & John Gibson. (2006). How important is selection?: Experimental versus non-experimental measures of the income gains from migration. World Bank.
Chicago-Zitierstil (17. Ausg.)McKenzie, David, Steven Stillman, und John Gibson. How Important Is Selection?: Experimental Versus Non-experimental Measures of the Income Gains from Migration. Washington, D.C: World Bank, 2006.
MLA-Zitierstil (9. Ausg.)McKenzie, David, et al. How Important Is Selection?: Experimental Versus Non-experimental Measures of the Income Gains from Migration. World Bank, 2006.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.