Cita APA

World Health Organization. (2003). State of the world's vaccines and immunization. World Health Organisation.

Citación estilo Chicago

World Health Organization. State of the World's Vaccines and Immunization. Geneva: World Health Organisation, 2003.

Cita MLA

World Health Organization. State of the World's Vaccines and Immunization. World Health Organisation, 2003.

Warning: These citations may not always be 100% accurate.