Cita APA (7th ed.)

World Bank & Gertler, P. (2011). Impact evaluation in practice. World Bank.

Cita Chicago (17th ed.)

World Bank i Paul Gertler. Impact Evaluation in Practice. Washington, D.C.: World Bank, 2011.

Cita MLA (8th ed.)

World Bank i Paul Gertler. Impact Evaluation in Practice. World Bank, 2011.