Maurice, J. M., & Davey, S. (2009). State of the world's vaccines and immunization (3rd ed.). World Health Organization.
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Citación estilo Chicago
Maurice, J. M., and Sheila Davey. State of the World's Vaccines and Immunization. 3rd ed. Geneva: World Health Organization, 2009.
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Cita MLA
Maurice, J. M., and Sheila Davey. State of the World's Vaccines and Immunization. 3rd ed. World Health Organization, 2009.
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