APA-viite

Clara, W., Armero, J., Rodriguez, D., de Lozano, C., Bonilla, L., Minaya, P., . . . Linares-Perez, N. (2012). Estimated incidence of influenza-virus-associated severe pneumonia in children in El Salvador, 2008–2010. World Health Organization.

Chicago-tyylinen lähdeviittaus

Clara, Wilfrido, et al. Estimated Incidence of Influenza-virus-associated Severe Pneumonia in Children in El Salvador, 2008–2010. World Health Organization, 2012.

MLA-viite

Clara, Wilfrido, et al. Estimated Incidence of Influenza-virus-associated Severe Pneumonia in Children in El Salvador, 2008–2010. World Health Organization, 2012.

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