(1985). Vaccination certificate requirements and health advice for international travel: Situation as on 1 january. Geneva: World Health Organization.
Chicago Style CitationVaccination Certificate Requirements and Health Advice for International Travel: Situation As On 1 January. Geneva: World Health Organization, 1985.
MLA CitationVaccination Certificate Requirements and Health Advice for International Travel: Situation As On 1 January. Geneva: World Health Organization, 1985.
Warning: These citations may not always be 100% accurate.