Cita APA (7th ed.)

Davey, S. (2003). State of the world's vaccines and immunization: Mick Geyer (Rev. ed.). World Health Organization.

Cita Chicago (17th ed.)

Davey, Sheila. State of the World's Vaccines and Immunization: Mick Geyer. Rev. ed. Geneva: World Health Organization, 2003.

Cita MLA (9th ed.)

Davey, Sheila. State of the World's Vaccines and Immunization: Mick Geyer. Rev. ed. World Health Organization, 2003.