APA (7th ed.) Zitazioa

(2005). The Niger river Basin: A vision for sustainable management. World Bank.

Chicago Style (17th ed.) Zitazioa

The Niger River Basin: A Vision for Sustainable Management. Washington: World Bank, 2005.

MLA (9th ed.) Zitazioa

The Niger River Basin: A Vision for Sustainable Management. World Bank, 2005.