Style de citation APA

Fenner, F. (1988). Smallpox and its eradication. World Health Organisation.

Style de citation Chicago

Fenner, F. Smallpox and Its Eradication. Geneva: World Health Organisation, 1988.

Style de citation MLA

Fenner, F. Smallpox and Its Eradication. World Health Organisation, 1988.

Attention : ces citations peuvent ne pas être correctes à 100%.