APA (7th ed.) Zitazioa
ebrary, Inc, Collier, P., & Sambanis, N. (2005). Africa: Evidence and analysis. World Bank.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Paul Collier, eta Nicholas Sambanis. Africa: Evidence and Analysis. Washington, D.C.: World Bank, 2005.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Africa: Evidence and Analysis. World Bank, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.