Gould, W. T. S. (2009). Population and development. Routledge.
Lua i Stíl Chicago (17ú heag.)Gould, W. T. S. Population and Development. London ; New York: Routledge, 2009.
Lua MLA (8ú heag.)Gould, W. T. S. Population and Development. Routledge, 2009.
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