APA aipamena

World Health Organization. (2000). International travel and health: Vaccination requirements and health advice. World Health Organization.

Chicago Style aipamena

World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. Geneva: World Health Organization, 2000.

MLA aipamena

World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. World Health Organization, 2000.