Polak, P. (2008). Out of poverty: What works when traditional approaches fail. Berrett-Koehler.
Cita Chicago (17th ed.)Polak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. San Francisco, Calif.: Berrett-Koehler, 2008.
Cita MLA (8th ed.)Polak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. Berrett-Koehler, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.