World Health Organization. (2009). Application of epidemiological principles for Public health action. World Health Organization.
Chicago-viite (17. p.)World Health Organization. Application of Epidemiological Principles for Public Health Action. New Delhi: World Health Organization, 2009.
MLA-viite (8. p.)World Health Organization. Application of Epidemiological Principles for Public Health Action. World Health Organization, 2009.
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