World Bank & Koeberle, S. (2005). Conditionality revisited: Concepts, experiences, and lessons. World Bank.
Chicago-referens (17:e uppl.)World Bank och Stefan Koeberle. Conditionality Revisited: Concepts, Experiences, and Lessons. Washington, DC: World Bank, 2005.
MLA-referens (9:e uppl.)World Bank och Stefan Koeberle. Conditionality Revisited: Concepts, Experiences, and Lessons. World Bank, 2005.