World Bank & Gertler, P. (2011). Impact evaluation in practice. World Bank.
Lua i Stíl Chicago (17ú heag.)World Bank agus Paul Gertler. Impact Evaluation in Practice. Washington, D.C.: World Bank, 2011.
Lua MLA (8ú heag.)World Bank agus Paul Gertler. Impact Evaluation in Practice. World Bank, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.