Amin, S., Das, J., & Goldstein, M. P. (2008). Are you being served?: New tools for measuring service delivery. The World Bank.
Lua i Stíl Chicago (17ú heag.)Amin, Samia, Jishnu Das, agus Markus P. Goldstein. Are You Being Served?: New Tools for Measuring Service Delivery. Washington, DC: The World Bank, 2008.
Lua MLA (9ú heag.)Amin, Samia, et al. Are You Being Served?: New Tools for Measuring Service Delivery. The World Bank, 2008.
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