APA Citation

Jezek, Z., Khodakevich, L. N., & Wickett, J. F. (1987). Smallpox and its post-eradication surveillance. World Health Organization.

Citação norma Chicago

Jezek, Z., L. N. Khodakevich, and J. F. Wickett. Smallpox and Its Post-eradication Surveillance. World Health Organization, 1987.

MLA Citation

Jezek, Z., L. N. Khodakevich, and J. F. Wickett. Smallpox and Its Post-eradication Surveillance. World Health Organization, 1987.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.