McKenzie, D. J. (2005). Paper walls are easier to tear down: Passport costs and legal barriers to emigration. World Bank.
Цитирование в стиле Чикаго (17-е изд.)McKenzie, David J. Paper Walls Are Easier to Tear Down: Passport Costs and Legal Barriers to Emigration. Washington D.C: World Bank, 2005.
Цитирование MLA (9-е изд.)McKenzie, David J. Paper Walls Are Easier to Tear Down: Passport Costs and Legal Barriers to Emigration. World Bank, 2005.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.