APA-Zitierstil (7. Ausg.)

Portugal-Pérez, A., & Wilson, J. S. (2008). Trade costs in Africa: Barriers and opportunities for reform. World Bank.

Chicago-Zitierstil (17. Ausg.)

Portugal-Pérez, Alberto, und John S. Wilson. Trade Costs in Africa: Barriers and Opportunities for Reform. [Washington, D.C]: World Bank, 2008.

MLA-Zitierstil (9. Ausg.)

Portugal-Pérez, Alberto, und John S. Wilson. Trade Costs in Africa: Barriers and Opportunities for Reform. World Bank, 2008.