Cita APA (7th ed.)

(2009). World health statistics 2009. World Health Organization.

Cita Chicago (17th ed.)

World Health Statistics 2009. Paris: World Health Organization, 2009.

Cita MLA (9th ed.)

World Health Statistics 2009. World Health Organization, 2009.

Atenció: Aquestes cites poden no estar 100% correctes.