Tohutoro APA (7th ed.)
Davey, S. (2002). State of the world's vaccines and immunization. World Health Organization.
Tohutoru Kātū Chicago (17th ed.)
Davey, Sheila. State of the World's Vaccines and Immunization. Geneva: World Health Organization, 2002.
Tohutoro MLA (9th ed.)
Davey, Sheila. State of the World's Vaccines and Immunization. World Health Organization, 2002.
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