Citazione APA

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

Stile di citazione Chicago

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

Citazione MLA

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

Attenzione: Queste citazioni potrebbero non essere precise al 100%.