Cita APA (7a ed.)
Davey, S. (2002). State of the world's vaccines and immunization. World Health Organization.
Cita Chicago Style (17a ed.)
Davey, Sheila. State of the World's Vaccines and Immunization. Geneva: World Health Organization, 2002.
Cita MLA (9a ed.)
Davey, Sheila. State of the World's Vaccines and Immunization. World Health Organization, 2002.
Precaución: Estas citas no son 100% exactas.