Polak, P. (2008). Out of poverty: What works when traditional approaches fail. Berrett-Koehler.
Chicago Style (17. basım) AtıfPolak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. San Francisco, Calif.: Berrett-Koehler, 2008.
MLA (8th ed.) AtıfPolak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. Berrett-Koehler, 2008.
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