APA Citation

(1988). Vaccination certificate requirements and health advice for international travel: Situation as on 1 January 1988. Geneva: World Health Organization.

Chicago Style Citation

Vaccination Certificate Requirements and Health Advice for International Travel: Situation As On 1 January 1988. Geneva: World Health Organization, 1988.

MLA Citation

Vaccination Certificate Requirements and Health Advice for International Travel: Situation As On 1 January 1988. Geneva: World Health Organization, 1988.

Warning: These citations may not always be 100% accurate.