Khandker, S. R., Koolwal, G. B., & Samad, H. A. (2010). Handbook on impact evaluation: Quantitative methods and practices. World Bank.
Lua i Stíl Chicago (17ú heag.)Khandker, Shahidur R., Gayatri B. Koolwal, agus Hussain A. Samad. Handbook on Impact Evaluation: Quantitative Methods and Practices. Washington, D.C.: World Bank, 2010.
Lua MLA (8ú heag.)Khandker, Shahidur R., et al. Handbook on Impact Evaluation: Quantitative Methods and Practices. World Bank, 2010.
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