Ravallion, M., & Lokshin, M. (2000). Identifying welfare effects from subjective questions. World Bank.
Cita Chicago (17th ed.)Ravallion, Martin, i Michael Lokshin. Identifying Welfare Effects from Subjective Questions. Washington, D.C: World Bank, 2000.
Cita MLA (9th ed.)Ravallion, Martin, i Michael Lokshin. Identifying Welfare Effects from Subjective Questions. World Bank, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.