World Bank & Koeberle, S. (2005). Conditionality revisited: Concepts, experiences, and lessons. World Bank.
Lua i Stíl Chicago (17ú heag.)World Bank agus Stefan Koeberle. Conditionality Revisited: Concepts, Experiences, and Lessons. Washington, DC: World Bank, 2005.
Lua MLA (9ú heag.)World Bank agus Stefan Koeberle. Conditionality Revisited: Concepts, Experiences, and Lessons. World Bank, 2005.
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