Briggs, D. J. (2003). Making a difference: Indicators to improve children's environmental health. World Health Organization.
Lua i Stíl Chicago (17ú heag.)Briggs, David J. Making a Difference: Indicators to Improve Children's Environmental Health. Geneva: World Health Organization, 2003.
Lua MLA (8ú heag.)Briggs, David J. Making a Difference: Indicators to Improve Children's Environmental Health. World Health Organization, 2003.
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