Kim, A., Tandon, A., & Asrat Hailu. (1997). Health and labor productivity: The economic impact of onchocercal skin disease. World Bank [Addis Ababa] University of Addis Ababa.
Lua i Stíl Chicago (17ú heag.)Kim, Aehyung, Ajay Tandon, agus Asrat Hailu. Health and Labor Productivity: The Economic Impact of Onchocercal Skin Disease. Washington, DC: World Bank [Addis Ababa] University of Addis Ababa, 1997.
Lua MLA (9ú heag.)Kim, Aehyung, et al. Health and Labor Productivity: The Economic Impact of Onchocercal Skin Disease. World Bank [Addis Ababa] University of Addis Ababa, 1997.
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