APA (7th ed.) Citation
(1981). World health statistics annual 1981: Vital statistics and causes of death. World Health Organization.
Chicago Style (17th ed.) Citation
World Health Statistics Annual 1981: Vital Statistics and Causes of Death. Genéve: World Health Organization, 1981.
MLA (9th ed.) Citation
World Health Statistics Annual 1981: Vital Statistics and Causes of Death. World Health Organization, 1981.
Warning: These citations may not always be 100% accurate.