Davey, S., & Davey, S. (2003). State of the world's vaccines and immunization (rev. edition.). Geneva: World Health Organization.
Chicago Style CitationDavey, Sheila, and Sheila Davey. State of the World's Vaccines and Immunization. rev. edition. Geneva: World Health Organization, 2003.
MLA CitationDavey, Sheila, and Sheila Davey. State of the World's Vaccines and Immunization. rev. edition. Geneva: World Health Organization, 2003.
Warning: These citations may not always be 100% accurate.