एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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