APA引文

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引文

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