World Health Organization. (2000). International travel and health: Vaccination requirements and health advice. World Health Organization.
Цитирование в стиле Чикаго (17-е изд.)World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. Geneva: World Health Organization, 2000.
Цитирование MLA (8-е изд.)World Health Organization. International Travel and Health: Vaccination Requirements and Health Advice. World Health Organization, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.