World Bank, Asian Development Bank, Australian Agency for International Development, & ebrary, Inc. (2007). Strategic directions for human development in Papua New Guinea. World Bank.
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Chicago Style (17th ed.) Zitazioa
World Bank, Asian Development Bank, Australian Agency for International Development, eta Inc ebrary. Strategic Directions for Human Development in Papua New Guinea. Washington, D.C.: World Bank, 2007.
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MLA (9th ed.) Zitazioa
World Bank, et al. Strategic Directions for Human Development in Papua New Guinea. World Bank, 2007.
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Kontuz: berrikusi erreferentzia hauek erabili aurretik.