Polak, P. (2008). Out of poverty: What works when traditional approaches fail. Berrett-Koehler.
Lua i Stíl Chicago (17ú heag.)Polak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. San Francisco, Calif.: Berrett-Koehler, 2008.
Lua MLA (8ú heag.)Polak, Paul. Out of Poverty: What Works When Traditional Approaches Fail. Berrett-Koehler, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.