APA (7th ed.) Citation

Davey, S. (2002). State of the world's vaccines and immunization. World Health Organization.

Chicago Style (17th ed.) Citation

Davey, Sheila. State of the World's Vaccines and Immunization. Geneva: World Health Organization, 2002.

MLA (9th ed.) Citation

Davey, Sheila. State of the World's Vaccines and Immunization. World Health Organization, 2002.